Answers
Answer/Explanation:
Recall:
Volume of a sphere = ⁴/3πr³
Surface Area = 4πr²
✔️For radius (r) = 1 mm:
Volume = ⁴/3 × π × 1³ = 4.19 mm³
Surface Area = 4 × π × 1² = 12.57 mm²
Ratio of volume to surface area = 4.19 : 12.57 = 1:3
✔️For radius (r) = 3 mm:
Volume = ⁴/3 × π × 3³ = 113.1 mm³
Surface Area = 4 × π × 3² = 113.1 mm²
Ratio of volume to surface area = 113.1 : 113.1 = 1:1
Related Questions
The chart shows the intake (consumption levels of vegetables in 14-18yr olds. For which vegetables is there the greatest difference between the recommended intake and the actual intake?
What is a recommendation of a food that teenagers could eat more of to fix this difference?
Answers
If the recommended intake of vegetables for teenagers between the ages of 14 and 18 is not being fulfilled, the highest discrepancy between the recommended and actual intake for each type of vegetable can be identified.
Thus, teenagers might increase their consumption of a range of vegetables, including leafy greens, carrots, bell peppers, broccoli, and sweet potatoes, to make sure they are getting the required amount of nutrients.
It can also help teenagers consume more if you encourage them to try different veggies and include them in meals and snacks. Additionally, teens who may not be used to eating vegetables may find them more appetizing if they are prepared in novel methods like roasting, grilling, or stir-frying.
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Will the trend toward an increased incidence of tusklessness in a population with heavy poaching lead to increased African elephant population sizes in the future?
Answers
No, the trend toward increased tusklessness in African elephants due to heavy poaching is not likely to lead to increased population sizes in the future.
While tuskless elephants may have a survival advantage in areas with high levels of poaching, this advantage is likely to be temporary. Over the long term, tusklessness may lead to reduced genetic diversity and reproductive success, as tusks play a role in mate selection and competition among males.
Additionally, tuskless elephants may be less able to defend themselves and their young against predators and may have a reduced ability to forage for food. Thus, while tusklessness may confer some immediate benefits in areas with high levels of poaching, it is not a viable long-term solution for elephant populations.
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Which of the following is evidence for the endosymbiosis theory?
Answers
Answer:
Mitochondria and chloroplast contain DNA similar to bacterial DNA
Explanation:
Both mitochondria and chloroplast have their own DNA, which by then was known to contain the hereditary material of organisms. Mitochondrial DNA has a simple circular structure, which is structurally similar to bacteria DNA and is more or less the same size.
Your answer is correct!
Early one morning a large number of fish were found dead along the banks of a Florida river.
Several scientists proposed hypotheses for the deaths. Which of the following would be most
appropriate for the scientists to do to determine the cause of the fish kill?
Answers
Answer:
sho fronk dil'oge compre siced
Explanation:
Answer: Conduct water quality tests to determine if there are any pollutants or toxins present in the river water.
Which statement BEST describes the differences illustrated in the diagram above:
Question 19 options:
Figure A represents punctuated equilibrium because rapid change happens and then change does not occur for a period of time
Figure A represents punctuated equilibrium because there is an accumulation of small genetic changes over long periods of time.
Figure B represents gradualism because rapid change happens and then change does not occur for a period of time
Both Figure A & B represent gradualism because there is an accumulation of small genetic changes over long periods of time.
Answers
Figure A = Punctuated equilibrium with rapid changes followed by stability. Figure B = Gradualism with continuous, slow changes.
The best explanation that portrays the distinctions outlined in the chart above is that Figure An addresses interspersed harmony since there is a collection of little hereditary changes over significant stretches of time, trailed by quick change, and afterward change doesn't happen for a while.
Then again, Figure B addresses gradualism since there is a consistent, slow gathering of little hereditary changes over a significant stretch of time.
Accentuated balance is a hypothesis that recommends that transformative changes happen in short eruptions of quick change, trailed by significant stretches of balance or dependability. During these times of strength, next to zero hereditary change happens.
Gradualism, then again, proposes that development occurs at a gradual speed over a significant stretch of time.
In Figure A, we can see that there are times of soundness where there is minimal hereditary change, trailed by an unexpected explosion of quick change.
This example is reliable with the hypothesis of accentuated harmony. In Figure B, there is a constant, continuous change over a significant stretch of time, which is steady with the hypothesis of gradualism.
In synopsis, the primary contrast showed in the graph is the pace of developmental change after some time. Figure An addresses interspersed harmony, while Figure B addresses gradualism.
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what might happen if all carnivores disappeared
Answers
Answer:
the population of herbivores, will increase
Explanation:
If all the carnivores are removed from the earth, the population of herbivores, will increase. Large population of herbivores will overgraze. As a result, all plants will disappear from the earth surface and ultimately the earth may become a desert.
Answer:
Below
Explanation:
There will be a dramatic increase in the population of primary consumers (herbivores), because there would be no predators that could hunt them. And we must keep in mind that removing atleast one species from an ecosystem can cause an imbalance and the ripple effect will bring nothing good.
In a nutshell, there would be too many herbivores on the planet.
10) In a species of cactus, the number of spines on a plant is genetically determined. The graph above shows
frequency distributions for populations of the cactus species growing in the presence or absence of two herbivores:
peccaries (a New World pig) and wasp larvae. Which of the following best accounts for the different frequency
distributions in the graph?
Number of Cacti
(A) Peccaries eat cacti with the greatest number of spines, and wasp larvae show no preference with respect to
spine number.
(B) Peccaries eat cacti with a smaller number of spines, and wasp larvae eat cacti with a greater number of spines.
(C) Wasps have increasing difficulty depositing eggs on cacti with more spines, and peccaries show no preference
with respect to spine number.
(D) Both peccaries and wasp larvae will eat the most abundant types of cacti, which are the plants with the greatest
number of spines.
Answers
Peccaries eat cacti with a smaller number of spines, and wasp larvae eat cacti with a greater number of spines best accounts for the different frequency distributions in the graph.
Therefore option B is correct.
What is a herbivores?A herbivore is described as an animal anatomically and physiologically adapted to eating plant material, for example foliage or marine algae, for the main component of its diet.
The frequency distributions of the cactus populations in the presence and absence of the two herbivores indicates that the presence of the herbivores which affects the distribution of spine numbers.
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How many grams of KOH are needed to make 75 mls of a 2% solution
Answers
To determine how numerous grams of KOH are demanded to make a 2 result in 75 ml of water, we need to first determine the attention in terms of grams per milliliter( g/ mL).
A 2 result means 2 grams of KOH per 100 ml of water. thus, for 75 ml of water, the quantum of KOH needed is
2 grams/ 100 ml) x 75 ml = 1.5 grams
So, you would need 1.5 grams of KOH to make a 75 ml 2 result. When making a result, we need to specify the attention of the solute( in this case, KOH) in the detergent( in this case, water). The most common way to express the attention of a result is as a chance by weight/ volume( w/ v), which indicates the number of grams of solute per 100 ml of the result.
In this case, we want to make a 2 result of KOH in 75 ml of water. We start by converting the chance to grams per 100 ml.
2 result = 2 grams of KOH per 100 ml of water
Next, we need to calculate how important KOH we need for 75 ml of water. We can use a simple proportion to do this
2 grams/ 100 ml) = ( x grams/ 75 ml)
Where x is the quantum of KOH we need.
Working for x, we get
x = ( 2 grams/ 100 ml) x 75 ml = 1.5 grams
Thus, we need 1.5 grams of KOH to make a 2 result in 75 ml of water.
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From the list below select all statements associated with the parasympathetic nervous system
disregard the checkmarks
Answers
The autonomic nervous system (ANS), which controls the body's unconscious processes, has three divisions, one of which is the parasympathetic nervous system (ParaNS).
The statements associated with the Parasympathetic Nervous System (ParaNS) are:
Promotes glycogen synthesisDecreases heart rateIncreases diuresisDecreases pupil diameterDecreases sweat gland activityActivity is impacted by anticholinergicsThe sympathetic nervous system (SNS), along with the parasympathetic nervous system and the enteric nervous system, is one of the three parts of the autonomic nervous system.
The statement "Shunts blood to active organs" is associated with the Sympathetic Nervous System (SNS).
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Drag each item to indicate whether it describes a benefit or a challenge of green roofs.
Answers
We can see here that dragging each item to indicate whether it describes a benefit or a challenge of green roofs, we have:
Benefit of green roofs:
absorption of carbon dioxide regulation of urban climate.What is green roof?A building's roof that is partially or entirely covered with plants and a growing media, planted atop a waterproofing membrane, is referred to as a green roof or a living roof.
Moreover, it could have root barriers, drainage, and irrigation systems as additional layers. Although there is some controversy, container gardens atop roofs, where plants are kept in pots, are not typically considered to be true green roofs. Another type of green roof that is used to remediate greywater is rooftop ponds.
Challenge of green roofs:
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Briefly explain THREE constitutional limitations to the right to freedom expression
Answers
Answer:
Three limitations to the right to freedom of expression are now no longer covered by the Constitution: propaganda for war, incitement to violence, and incitement to violence as a means to achieve an objective.
Explanation:
In India, what are the constraints on freedom of expression that exist?
As reported by the Supreme Court of India in the Union of India, the right to freedom of speech and expression has no geographical limitations, and it comes with it the right for a citizen to acquire information and to exchange ideas with others now not merely within the country but also overseas.
In section sixteen, we find the following boundaries that govern our freedom of expression. In addition to the proper in subsection (1), it does not now extend to propaganda for war; incitement to violence; or advocacy of hatred. Incitement to harm has to do with the fact that it is primarily motivated by racial, ethnic, gender or religious prejudice, and that constitutes incitement to harm.
Please give the brainliest, really appreciated. Thank you
What is the flexibility of spider silk determined by the structure of its molecules
Answers
The flexibility of spider silk determined by the structure of its molecules is quite strong.
The components that make up spider silk are what give it its flexibility. Proteins called fibroins, which are made up of amino acids organised in a certain sequence, make up spider silk. The arrangement of amino acids in fibroin proteins results in a helical structure, which is held together by hydrogen bonds between the amino acids.
The fibroin protein chain's exact arrangement of amino acids and hydrogen bonds produces a special blend of strength and flexibility. The silk is flexible enough to stretch and absorb energy without breaking and robust enough to resist significant stress. Spider silk is a fantastic material for many uses, including clothes, medical equipment, and even bulletproof vests, thanks to its unique mix of qualities.
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What is a correlation efficient of -0.48 indicate about a set of data
Answers
Answer:
It indicates that there is a weak negative correlation between the variables.
Explanation:
Because the correlation coefficient is negative it means that it is a negative association. Since the number is 0.48 it is a weak correlation. Combine these two things together and you get that -0.48 indicates a weak negative correlation.
three ways in which geographical location of people through hampers media provide them with information timeously.
Answers
The three ways are;
Limited InfrastructureTime Zone DifferencesLanguage and Cultural BarrierWhat are the three ways?There may not be adequate infrastructure, such as dependable internet connectivity, television networks, or print media distribution routes, in some distant or impoverished places.
Time zone differences can also be significantly influenced by geography. Receiving current news can be delayed if media outlets or news sources are based predominantly in another time zone.
Media content may need to be translated or adjusted for different audiences in regions with a variety of languages or cultural backgrounds.
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Can someone write this but on different words pleaseeeee?
One part of the experiment that I think was essential for getting good results was the table graph of how many eggs had hatched and what pH level they hatched in.
Because as the pH levels were rising and more eggs started hatching, it showed a consistent patter that helped me come to the conclusion that when eggs were placed in water with a neutral pH balance, they were more likely to hatch and they couldn't hatch in acidic water. The overall design of the lab was helpful to help me farther understand the concept of acid rain and water and why it's bad for our environment.
Answers
Answer:
The inclusion of a table graph depicting the number of hatched eggs at various pH levels played a crucial role in obtaining favorable outcomes in the experiment. The graph demonstrated a consistent pattern as the pH levels increased, indicating a correlation between a neutral pH and increased hatching rates, while acidic water hindered hatching. The comprehensive laboratory setup aided my comprehension of the detrimental effects of acid rain on the environment and the significance of water quality.
(Chat GPT is free to use, and great for this kind of thing! Just ask it to rephrase the writing. Good luck!)
If the population of crab becomes extinct in this food web which population would most likely decrease
Answers
For example, in a food web that includes crabs, fish, and sea birds, if crabs become extinct, the population of fish that crabs feed on may increase. This increase in the fish population may then lead to a decrease in the population of the small organisms that the fish feed on.
On the other hand, if crabs are preyed upon by sea birds, then the population of sea birds may decrease if they are unable to find alternative food sources. This, in turn, may impact the population of the organisms that the sea birds feed on, as they may not be consumed at the same rate as before.
Overall, the extinction of any species in a food web can have significant impacts on other populations within that web, and can cause ripple effects throughout the ecosystem.
The three hormones that influence testosterone production are GRH, FSH, and LH. true or false
Answers
Answer:
True
Explanation:
The leydig cells produce testosterone
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Which statement about the biotechnology of cloning is correct?
Question 1 options:
It has resulted in the creation of two genetically different sheep, which has been universally praised by everyone.
It involves the genetic modification of plants that make plants more resistant to insects.
It involves the selective breeding of organisms that are crossed to make unique organisms.
It allows the possibility of organ formation, yet it has many ethical and moral issues concerning how these organs will be designed.
Answers
The correct statement about the biotechnology of cloning is:
"It allows the possibility of organ formation, yet it has many ethical and moral issues concerning how these organs will be designed."
Cloning is the process of creating an identical copy of an organism, either naturally or artificially. In biotechnology, cloning has the potential to be used for various purposes, including the creation of genetically identical organisms, the production of transgenic organisms, and the possibility of generating organs for transplantation.
However, the use of cloning for organ formation raises ethical and moral concerns, such as the source of the cells used for the cloning, the welfare of the animals involved, and the potential implications for the human genetic code. Therefore, the use of cloning for organ formation is a topic of ongoing debate and study.
Which event was a sign to scientists that DDT was a harmful pollutant?
O Trout were regularly dying in mass quantities each year.
O Marine invertebrate populations were experiencing significant declines.
O Levels of ultraviolet radiation at the south pole were increasing.
O Bald eagle populations declined to only 500 pairs in the 1960s.
Answers
The event that was a sign to scientists that DDT was a harmful pollutant is Bald eagle populations declined to only 500 pairs in the 1960s.
The correct option is D
What is DDT?DDT (dichloro-diphenyl-trichloroethane) is an insecticide that was widely used in the mid-20th century to control pests, including mosquitoes.
However, it was discovered that DDT had detrimental effects on the environment and wildlife. The decline of bald eagle populations, which are sensitive to DDT, was a significant indication to scientists of the harmful impact of DDT.
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Answer: bald eagle populations declined to only 500 pairs in the 1960s.
Explanation: i took the test and got it correct!
Question 5 of 25
Why might an ecosystem remain stable over a long period of time?
A. Dynamic equilibrium allows for small changes to take place
around average conditions.
B. The ecosystem's abiotic factors stay the same, while the type of
climax community changes.
C. Dynamic equilibrium allows for abiotic factors to change
continuously, while succession maintains species.
OD. The ecosystem has no predators, so the prey populations only
increase.
Answers
In a stable ecosystem, dynamic equilibrium enables small fluctuations and adjustments to occur while keeping the overall system in balance. So, option A is the right choice.
An ecosystem may remain stable over a long period of time due to dynamic equilibrium. Dynamic equilibrium refers to a state in which the ecosystem experiences small fluctuations and adjustments while maintaining average conditions. This balance allows the ecosystem to withstand disturbances and environmental changes without undergoing drastic shifts.
In dynamic equilibrium, the interactions between biotic and abiotic components are regulated, ensuring a relatively stable state. Small changes occur within the ecosystem, but they are compensated for by opposing changes, maintaining overall stability. This equilibrium enables the ecosystem to adapt to gradual variations and disturbances while keeping the essential functions and processes intact.
By maintaining stability, the ecosystem can support the survival and persistence of its constituent species. It provides a predictable environment for organisms, allowing them to thrive and maintain populations within suitable ranges. This stability is crucial for the long-term sustainability and resilience of the ecosystem.
The right answer is A. Dynamic equilibrium allows for small changes to take place around average conditions.
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What conditions must be present for a hurricane to form?
A. A thunderstorm that mixes with cool ocean water and cool, moist air, allowing it to grow
in size and strength
B. The same conditions that form a tornado
C. A thunderstorm that forms over warm ocean water
D. Heavy winds, torrential rain, and storm surges
Answers
Answer:
C. A thunderstorm that forms over warm ocean water.
Explanation:
The correct condition for a hurricane to form is option C: A thunderstorm that forms over warm ocean water. Hurricanes are tropical cyclones that require specific atmospheric and oceanic conditions to develop. The primary factors necessary for hurricane formation include:
5. Suppose that every year, one half of the population has two offspring per
person, and the other half has none. If all members of the population die after a
year, what is the resulting growth rate? Explain your answer.
Answers
The resulting growth rate of the population in this scenario would be a net growth rate of one offspring per person per year.
This is because, on average, half of the population will have two offspring per year while the other half will have none. To break it down further, let's assume that there are 100 people in the population. In one year, 50 of them will have two offspring each, resulting in a total of 100 new offspring. The other 50 people will not have any offspring. Therefore, the net growth rate is 100 new offspring divided by 100 people, which equals one new offspring per person. It is important to note that this scenario assumes a perfect balance between the two groups of the population. In reality, there are many factors that can influence reproductive rates, including age, health, access to resources, and cultural norms. Additionally, this scenario does not take into account any deaths or migration, which could impact the overall growth rate of the population. Overall, this scenario demonstrates the concept of replacement-level fertility, where each person is replaced by two offspring. However, it is important to consider the many complex factors that can influence population growth rates in real-world situations.
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2. What changed in skull anatomy that occurred from the dawn horse to the
modern horse?
Increase in the size of the skull
O Decrease in the size of the skull
Nothing
3. What change occurred in leg anatomy that occurred from the dawn horse
to the modern horse?
O Size of leg
O Toe structure - started as 4 toe bones, now is one toe bone
OBoth of these
Answers
From the dawn horse to the modern horse, the following changes occurred:
2. Increase in the size of the skull.
3. Size of the leg.
Toe structure - started as four toe bones, now is one toe bone.
The correct answer is Both of these.
What evolutionary changes occurred in the dawn horse to give the modern-day horse?The evolutionary changes that occurred in the dawn horse to give the modern-day horse gradually over millions of years were driven by natural selection and adaptations to changing environments.
These changes include:
Increase in Body SizeLimb AdaptationsDental AdaptationsLengthening of LimbsStrengthening of Ligaments and MusclesDevelopment of a Single Toed FootLearn more about modern-day horse at: https://brainly.com/question/688848
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1.Analyze the similarities between each of the skull and front leg fossils.
Which of the following that might lead to the conclusion that these are all
related species.
The pointy bone on top of the muzzle of the horse
Gap between front and rear teeth
The triangular shape of the head
All of the above
Answers
The similarities between each of the skull and front leg fossils that might lead to the conclusion that they are all related species is D. All of the above.
How can we know that these species are related?The pointy bone on top of the muzzle of the horse, called the rostral process, is present in all of the fossils. This suggests that all of the animals had a similar diet and used their teeth in the same way.
The gap between the front and rear teeth is also present in all of the fossils. This suggests that all of the animals were herbivores and used their front teeth to graze on grass and other plants.
The triangular shape of the head is also present in all of the fossils. This suggests that all of the animals had a similar skull structure and were built for speed.
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NEED HELP ASAP
The graph shows the average number of rabbits and coyotes in an area over time. Which conclusion is best supported by these data?
A) The coyote population is influenced by the available number of rabbits.
B) The number of coyotes will be greater than the number of rabbits within a ten-year period.
C) The number of rabbits will decrease during the summer months.
D) The rabbit population obtains energy by consuming young plants.
Answers
Answer:A
Explanation:
It shows the coyote population rising when there are more rabbits, and decreasing when the rabbit population starts to decrease, because of a predator-pret relationship.
how long does it take a 180g sample of radioactive gold (half-life=2.69) to decay to 1/8 its original mass?
Answers
It would take approximately 6.27 years for a 180g sample of radioactive gold (with a half-life of 2.69 years) to decay to 1/8 its original mass.
The decay of radioactive gold can be modeled by the equation:
N(t) = N₀ * (1/2)^(t / t₁/₂)
where N(t) is the remaining mass at time t, N₀ is the initial mass, t₁/₂ is the half-life, and t is the elapsed time.
In this case, we want to find the time it takes for a 180g sample of radioactive gold to decay to 1/8 its original mass. This means that the remaining mass (N(t)) is 180g / 8 = 22.5g. We can substitute these values into the equation and solve for t:
22.5g = 180g * (1/2)^(t / 2.69)
Dividing both sides by 180g:
(22.5g / 180g) = (1/2)^(t / 2.69)
Taking the natural logarithm of both sides:
ln(22.5/180) = (t / 2.69) * ln(1/2)
Simplifying:
t = (2.69 / ln(1/2)) * ln(22.5/180)
t ≈ 6.27 years
Therefore, it would take approximately 6.27 years for a 180g sample of radioactive gold (with a half-life of 2.69 years) to decay to 1/8 its original mass.
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If ______________ area is damaged, then this can lead to ____________ aphasia, which is characterized by difficulty speaking.
Broca's; fluent
Broca's; non-fluent
Wernicke's; non-fluent
Wernicke's; fluent
Answers
If Broca's area is damaged, then this can lead to non-fluent aphasia, which is characterized by difficulty speaking, option B is correct.
Broca's area is a region in the frontal lobe of the brain that plays a critical role in speech production. When this area is damaged, a person may struggle to form words and sentences, leading to non-fluent aphasia. Non-fluent aphasia is also known as Broca's aphasia, expressive aphasia, or motor aphasia.
Individuals with Broca's aphasia may understand language well but have difficulty expressing themselves through speech or writing. They may speak in short, choppy phrases or use a limited vocabulary. They may also struggle with grammatical structure and word order. In some cases, they may experience difficulty with reading and writing as well, option B is correct.
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The correct question is:
If ______________ area is damaged, then this can lead to ____________ aphasia, which is characterized by difficulty speaking.
A) Broca's; fluent
B) Broca's; non-fluent
C) Wernicke's; non-fluent
D) Wernicke's; fluent
What type of sentence is turn left after u cross the bridge
Answers
Answer: OUTRO
Explanation:
The efferent pathway of the autonomic nervous system consists of ________?
1) a single neuron which does not synapse
2) multiple neurons which synapse without a ganglion
3) multiple neurons which synapse at a ganglion
4) a single neuron which passed through a ganglion
Answers
The efferent pathway of the autonomic nervous system consists of preganglionic neurons and postganglionic neurons which synapse at a ganglion. The correct option is C.
Thus, the efferent pathway of the autonomic nervous system consists of neurons that synapse at an autonomic ganglion. The autonomic nervous system is a peripheral nervous system regulating the involuntary functions of the body consisting of preganglionic neurons and postganglionic neurons.
The preganglionic neuron is the first neuron that originates in the central nervous system that synapses with the second neuron, which is called a postganglionic neuron at an autonomic ganglion in an autonomic nervous system. The postganglionic neuron then extends its axon to the effector organs, which are smooth muscle, cardiac muscle, or gland.
Thus, the ideal selection is option C.
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A sea is a common resource between two countries. Conservation of marine resources is an issue that these countries are facing. Which type of approach should the countries adopt to manage their common resource?
A.
adaptive management
B.
ecosystem-based management
C.
community-based management
D.
integrated management
Answers
Answer:the answer is b
Explanation: