Answer:
In a marine ecosystem, or any type of ecosystem, a keystone species is an organism that helps hold the system together. Without its keystone species, ecosystems would look very different. Some ecosystems might not be able to adapt to environmental changes if their keystone species disappeared.
Researchers are investigating the incidence of algal blooms in neighborhood ponds. In summer, they collect water samples from over 100 neighborhood ponds in Dallas, Texas and surrounding cities. They also surveyed residents in each neighborhood to collect data such as average lot size, average home value, average resident income, and lawn care methods. The researchers found that neighborhoods with large lots, high home values, and high income levels were likely to use automatic sprinklers and synthetic fertilizers on their lawns. These same neighborhoods were very likely to have abundant algae in their ponds. Based on this research, which conclusion below provides the best explanation for why algae proliferate in neighborhood ponds?
a. Automatic sprinklers may house algae and may spray into neighborhood ponds.
b. High income neighborhoods are less likely to treat their ponds with chemicals that prevent algae growth.
c. Lawn fertilizer that washes into neighborhood ponds likely causes algae to become more abundant.
d. Neighborhoods with expensive homes typically have larger, deeper ponds that are more likely to support algae proliferation.
e. Large lot sizes likely provide algae with extra room to grow, and the algae then washes into the pond.
Answer: c. Lawn fertilizer that washes into neighborhood ponds likely causes algae to become more abundant.
Explanation:
Eutrophication is a natural phenomena in which the algal growth occurs in the water body due to increase in concentration of the fertilizers and manures being drained from the agricultural land into water. This causes decrease in oxygen level in water, and the aquatic animals in water will not survive due to scarcity of water.
According to the given situation, the growth of algae in the neighboring ponds is due to the drainage of lawn fertilizers into the neighboring ponds being washed from the lawns. This causes algae to grow abundantly in ponds.
HELPPP 7TH GRADE SCIENCE, GIVING BRAINLIEST!!
Answer:
The first answer is Gravity and Energy from the sun.
Explanation:
Gravity forces pressure on to the rocks causing their different phases and Energy from the sun is the other because the water cycle includes evaporation which is caused by the sun.
Which of the following processes produces 38ATP of energy per
Glucose?
Answer:
glycolysis is the process produce 38ATP of energy per glucose
Which of the following activities occurs in both prokaryotic cells and eukaryotic cells?
A: Proteins are assembled on ribosomes.
B: A large central vacuole stores DNA and RNA.
C: Mitochondria provide energy for cell processes.
D: Chloroplasts capture and transform the energy of sunlight.
E: The rough endoplasmic reticulum releases enzymes to break apart wastes.
Answer: A
Explanation: The correct answer is option A because it is the only answer where it occurs in both prokaryotic and eukaryotic cells.
Option A: Proteins are assembled on ribosomes. is correct.
Cells fall into following two broad categories.
Prokaryotic EukaryoticProkaryotes are single-celled creatures belonging to the Bacteria and Archaea domains. Eukaryotes include animal cells, plant cells, fungus, and protists. Prokaryotic cells do not have a nucleus. Cells with a nucleus are referred to be eukaryotic cells. Aside from the nucleus, eukaryotic cells have other organelles. Ribosomes are the only organelles in a bacterial cell.
Proteins are assembled on ribosomes.
So, option A. is correct.
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What do hypotheses, theories, and laws have in common?
data
predictions
explanations
observation
Answer:
observation
Explanation:
1-When you get sick, should you take an antibiotic that a friend or family member offers you (this includes your mom!)? Why or why not?
2- Let's say you're sick and your doctor prescribes you an antibiotic that you have to take for 7 days. If you feel better after 4 days, should you continue taking the antibiotic for the full dose, or stop taking it? Why or why not?
3-If you have a virus, will taking antibiotics cure your infection? Why or why not?
Answer:
No, because they are not a physicianYes, I will continue to make myself more healthy it depends on the virusA student studying aquaculture is interested in how diet and water temperature affect the growth rates of fish. She hypothesizes that fish receiving a high protein diets and in warmer temperatures will have enhanced growth rates. She has four treatment groups:______
a. Fish tanks in a laboratory at 22 degrees C and high protein diet.
b. Fish tanks in a laboratory at 22 degrees C and low protein diet.
c. Fish tanks outside with a temperature of 26 degrees C and high protein diet.
d. Fish tanks outside with a temperature of 26 degrees C and low protein diet.
Answer:
Explanation:
This question is not complete below is the remaining part of the question. Is her hypothesis a true hypothesis or merely a prediction? (Has she provided rationale for her hypothesis?)
Do you think this is a good experimental design? Do you have suggestions for how she could improve her experimental design?
Answers:
The result of the experiment will determine if the hypothesis will be accepted or rejected and further explanation will be given to the effect.
Increase in dietry protein will subsequently increase the body weight as such the result show should tend towards a positive response to an increase in protein level.
The experiment design is completely randomized design(CRD) and it is good for the experiment to have the temperature all monitored and a close watch on the fishes.
please help!! :(( The total amount of mass before and after a chemical reaction is the same. Thus, mass is ______.
Answer:
Constant
Explanation:
Answer:
Explanation:
In a chemical reaction the total mass of all the substances taking part in the reaction remains the same. ... The law of conservation of mass states that the total mass of substances taking part in a chemical reaction is conserved during the reaction.
What's the primary difference between compressions on an adult vs. a small child?m
Answer:
Depending on the size of the child, you can use one or two hands to provide compressions. Because children have smaller chests than adults, the depth of compressions should be only one and a half inches. The compression and breath rate should be the same for children as for adults—30 compressions to two breaths.
Explanation:
pls heart and give brainliest much appreciated
Can anyone help me please!
Answer:
I think its a plant cell
Explanation:
A plant cell also contains structures not found in an animal cell. Some of these include a cell wall, a large vacuole, and plastids.
Which organelle is like the glue holding all the organelles together in place
Answer:
The Cytoplasm
Explanation:
The cytoplasm in a cell is a jelly or glue like substance that holds everything in place. It is the flesh, essentially, of a cell. It is 90% water and allows dissolved nutrients and waste to pass through it to get from organelle to organelle or to and from the cell wall.
Hope this helps! :)
How could you defend the prediction you made and developed in your drawings?
(succession)
Answer:
Sketching
Explanation:
Because when you are doing bio there is alot of sketching for example for cells to prove the way they look like where the nucleus is found like that
The photograph shows rockweed. Which feature allows rockweed to
withstand the constant wave action of its environment?
A. The ability to carry out chemosynthesis
B. The ability to firmly attach to rocks
C. The ability to produce its own light
D. The ability to carry out photosynthesis
Answer:
B
Explanation:
This is the answer because if the rockweed is able to firmly attach its self to the rocks it would be able to withstand the constant wave action
The tendency to firmly attach to rocks allows rockweed to withstand the constant wave action of its environment.
RockweedIt is a brown alga and grows in the rich intertidal zone.
The holdfast of a rockweed permits it to withstand the constant wave action of its surroundings.
Holdfast is a tiny stem-like composition which allows the weed to anchor firmly to the rocks.
The rockweeds possess some of the advantages over the normal weeds that permits them to sustain in water like the intense developed root systems.
Thus, the correct answer is option B, that is, the ability to firmly attach to rocks.
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Which clastic sediment has the smallest grain size?
a. sand
b. clay
c. pebbles
d. gravel
Answer:
Your answer is B,Clay.
Explanation:
Silt is the name of a sediment grain that range in size from 0.625 mm to 0.0039 mm. Mud is the smallest grain size and is also known as clay.
A snake is a predator when he eats a
field mouse. Then a hawk swoops
down and grabs the snake. What is
the snake now?
A. scavenger
B. decomposer
C. producer
D. prey
The snake will now be the hawks prey.
Hope this helps!
Which place on an enzyme binds a substrate?
Choose the term that best matches the description given.
A (blank)
is a replicating set of stem cells from one blastocyst.
stem-cell line
stem-cell research
pluripotent cell
Which one of the following was not described as part of the eukaryotic endomembrane system?
a)Golgi apparatus
b)Secretory vesicles
c)Lysosome
d)Rough endoplasmic reticulum
e)Carboxysome
Answer:
E.
i believe
Explanation:
At a divergent boundary -
A. plates move together.
B. plates move apart from each other.
C. plates move along side of each other.
D. plates do not move at all.
A bird is eating a grasshopper, which had eaten some plants. How is energy being passed to the bird? (A Indirectly from the grasshopper (B .Directly from the plant (C Directly from the sun (D Indirectly from the plant( science)
In a food chain is simply a network of supply of energy beginning from the producer to the final consumer.
The correct options are
D Indirectly from the plant( science)
Energy Transfer in Food ChainSummary of the Energy Transfer
The flow of energy from the grasshopper to the bird is a direct flow, also the flow of energy from the plant to the grasshopper is a direct flow, this is so because there are not middle agent between the two organisms stated above.
When there is a middle agent, then the flow becomes and indirect flow.
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Answer:
Indirectly from the plant
Explanation:
I got it right on my quiz... hope this helps!!
What type of IPM control is crop rotation?
Mindful meditation encourages practitioners to __________.
A.
empty their minds of any thoughts
B.
focus on one particular image or thought
C.
imagine being more emotionally happy
D.
fall in and out of sleep during meditation
Answer:
A empty your find minds of any thoughts
Answer:
a. EMPTY THEIR MINDS OF ANY THOUGHTS
I got 100% on my psych test 2022 edge
Explanation:
3. List the possible ecological interactions between the organisms listed below. Hint: Use Table 1 in the introduction.
a. Owl-Owl:
b. Owl-mouse:
c. Owl-trees:
d. Owl-tick:
Answer:
I think it's B. Not very sure.
Explanation:
Answer:
b
Explanation:
3. Carrying capacity is the _size of a population that can be supported by an area.
Answer:
Explanation:
Carrying capacity is the maximum number of individuals of one species that a particular environment can support. Limiting factors determine this number.
During Mendel's first set of experiments, all the plants' F, offspring expressed
the same version of the studied trait. Which of the following best describes
these experiments?
O A. Mendel crossed true-breeding plants with different versions of a
studied trait.
O B. Mendel crossed plants that all expressed the same version of a
studied trait.
C. Mendel observed crosses that took place naturally in his gardens.
Ο Ο
O D. Mendel allowed true-breeding plants to self-pollinate.
Answer:
Mendel observed crosses that took place naturally in his gardens.
Explanation:
Traits are transmitted faithfully from parents to offspring independently of other traits and in dominant and recessive patterns. Mendel was interested in the offspring of two different parent plants, so he had to prevent self-pollination.
[RevyBreeze]
Which best describes X and Y
The axis on a coordinate plane, variables used in mathematics.
ou give your 4-year-old a sticker every time she remembers to brush her teeth. (She enjoys getting stickers.) This is an example of
Answer:
Positive reinforcement
Explanation:
Positive reinforcement means giving something rewarding to an individual to when they perform a specific action so that they associate the action with the reward. This leads to them performing the action more often.
Other examples include rewarding your pet with treats for doing a trick, or raising employees wages if they hit a performance target
How did you classify the materials?
Compare the frequency of the alleles for STR loci FH19, FH60, FH67, FH71, and FH129 that you completed in Table 3 with the values in Table 5. Why do you think the values differ?
Allele is the versions of a gene and it can be either dominant or recessive.
What are alleles?Your information is incomplete as the table isn't given. Therefore, an overview of alleles will be given.
Alleles are variant form of genes. In genetics, it should be noted that genes show deviations. Therefore, alleles make up the genetic information which defines the gene.
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Summarize what reasherchers did to improve the quality of post mining sites soil in
Answer:
The researcher centred on the potential uses of biochar, charcoal primarily used for agricultural and to improve the quality of post mining sites.
A method called mountaintop removal was used by mining firms. This means that they remove rock and mineral deposits off the top of the mountain to gain access to within the coal seams. The resulting soil is infertile and strongly acidic. The compacted soil after mine proves harder to bring seed into the soil.
The researchers try to use biochar to help reforest the soil at the post-mining site. Before it was reseeded and replanted, they got permission to add a layer of biochar to a post-mining site. the team created “planting cells” of biochar‐enhanced soil on the post‐mining site and that showed improvment in the sapling growth.
Explanation: