A myocardial infarction comprises a series of changes in the cardiac tissue that originate when there is an inadequate blood flow to the heart muscle or a coronary artery becomes blocked.
What is a myocardial infarction?It is characterized by the sudden appearance of a picture of ischemic suffering (lack of irrigation) to a part of the heart muscle produced by the acute and total obstruction of one of the coronary arteries.
It is recognized by the sudden appearance of the characteristic symptoms of intense pain in the chest, in the precordial area and a feeling of general malaise.
Therefore, we can conclude that a myocardial infarction comprises a series of changes in the cardiac tissue that originate when there is an inadequate blood flow to the heart muscle.
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Human population projections are subject to change due to fluctuations in global fertility and mortality rates. please select the best answer from the choices provided t f
The statement that due to fluctuations in worldwide fertility and mortality rates, human population forecasts are prone to change is true.
What is the human population?The total number of humans in the world is known as the human population.
The current human population is 7.9 billion.
The human population is increasing day by day, due to overpopulation, the resources are decreasing and pollution is increasing.
The study of the human population is called demography.
Thus, the given statement is true.
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Answer:
T
Explanation:
Edge 2022
what is vegatative propogation?
Answer: Vegetative propagation is an a s exual method of plant reproduction that occurs in its leaves, roots and stem.
Answer:
VEGETATIVE PROPAGATIONregeneration of new plant from the vegetative part or organ of the parent plant is called vegetative propagation vegetative propagation is used full to separate the plant in wider region mother plant get favourable condition if then colonized to the reason by vegetative propagation the offspring adapted
1 NATURAL VEGETATIVE PROPAGATION-
BY ROOT -
the interact root of several Woody plants such as guava sisoo grow just below the soil produce advantages but should just below the soil produce but should develop from this bird which give rise to new plant
BY STEM -
stamp is the source of natural vegetative reproduction in several plants modification or found in stem to perform vegetative propagation
a Runners- the weak stem of creep forward on the soil that downwardly from node axillary bud are present in the axils of scale leaves node
b s ucker - rise time in similar to runner but it is underground its main stem grow upward and develop advantages root from underground
c offset- the thick and fleshy runner of hydrophytes plant is called offset
BY LEAVES
Titan plant develop adventirious bud on their leaves this word after separating from Mother plant give rise to new plant
BY BULBILS
they are fleshy but which are produced in the axils of leaves in the auxiliary Bud
ARTIFICIAL VEGETATIVE PROPAGATION-GRAFTING
it is the most common method of vegetative reproduction in this method variety of shame spices can be converted into plant of better variety in the technique of trade off to plant are joined in such portion of one part called stock is joint with another plant is called scion
BUDDING-
it is the superior and modern method of plant propagation in this method but of plant are superior varieties grafted in the stem of plant in variety after making oblique you cut up to the bark of stem after fue with this but join with plant as result formed on the new plant
LAYERING-
the method of inductor root formation the branches while they are still attached to a mother plant is called layering
CUTTING -
any part of plant root stem or leaf which has the power to develop itself into a new plant after separating from the mother plant is called cutting
IMPORTANCE OF PROPAGATION
the plant which have lost their power to produce seeds like Banana grapes Rose in it can be propagated by vegetative means only the plant which produce seed in less number are usually propagated vegetative leaf the change of some chemical x-ray and environmental variation as temperature can be studied easily in plant which vegetative propagation the tissue culture technique of vegetative propagation is used to raise disease free plantWhich trait is least likely to be modified by environmental influences? life span height blood type weight
Answer:
It's blood type
Explanation:
im in k12 and had a quiz about it.
How have the historic levels of melanin in human populations changed due to migration? (1 point)
humans that produced less melanin became more common as populations migrated away from the equator.
humans that produced more melanin became more common as populations migrated away from the equator.
humans that produced more melanin became more common as populations migrated toward the equator.
humans that produced less melanin became more common as populations migrated toward the equator
Answer:
i would say A
Explanation:
Answer:
A
Explanation:
the answer is A because human eat grass :)
Which of the following are examples of habitats where sympatric speciation could occur?
Choose one or more:
A. different locations along the Great Barrier coral reef in Australia
B. opposite sides of a mountain range
C. the North Rim and South Rim of the Grand Canyon
D. an elevational gradient on the south-facing slope of a mountain
E. varying water depths in a lake
An example of habitats where sympatric speciation occur is the North Rim and South Rim of the Grand Canyon.
What is Sympatric speciation?Sympatric speciation refer to evolution of a new species or the creation of new species from the ancestal species that is alive and surviving while both of them continue to live in the same geographic region. In evolutionary biology and biogeography, sympatric refer to organisms that have ranges and their ranges overlap so that they occur together some places.
The individual are dependent on some physical needs like shelter, food and so on.
Therefore, An example of habitats where sympatric speciation occur is the North Rim and South Rim of the Grand Canyon.
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can someone please help me with these two?
Answer:
Question 1: (A) Producers
Question 2: (C) Xylem
Explanation:
I am not sure how to explain these because its just their definitions and their role. Sorry!
Which sti if left untreated can cause pelvic inflammatory disorder.
Answer:
If you have chlamydia and it's left untreated, it may develop into PID within a year.
Which of the following statements about energy and trophic levels is not true? a. the amount of available energy decreases at each higher trophic level. b. the energy conversion efficiency decreases at higher trophic levels. c. the net production of energy is higher at lower trophic levels. d. none of the above please select the best answer from the choices provided a b c d
All statements are true about the energy and trophic levels. So, the correct option is D. None of the above.
What are trophic levels?Trophic levels are the levels of energy transfer from lower to higher levels.
There are five levels of trophic level.
The lower level contains autotrophs or producers. And the uppermost level contains big animals or tertiary consumers.
The energy level decreases on going to the higher levels because some amount of energy always lapses as entropy.
Thus, the correct option is D.
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Answer: D
Explanation: fr fr
Physical stressors to an ecosystem that are removed or corrected first in restoration projects typically include ______.
Answer:
water flow, vehicle traffic and pollutants
Explanation:
A species that remains when an acid has lost a proton is a.
If oxygen is absent during the second stage of cellular respiration,
a.) fermentation will occur.
b.) the Krebs cycle begins.
c.) the electron transport chain works more efficiently.
d.) glycolysis stops.
Answer:
Fermentation will occur.
The Krebs cycle occurs when acetyl-CoA combines OAA (oxaloacetate), C makes no sense, and Oxygen is vital for glycolysis...
PLS I need help with this
Answer:
The answer is C
Explanation:
prophase is first, meta is second, ano is third and telo is last
Answer:
prophase,metaphase,anaphase,telophase
Which of the following is not a future consequence of bioenergy use?
Increased ethanol production
Fewer greenhouse gas emissions
Increasing prices for biofuel crops
Less deforestation and land use
We can confirm that Increased ethanol production is not a consequence of bioenergy use.
Why is ethanol production not a consequence of bioenergy?This has to do with the fact that there would be no need for increased production of ethanol when using bioenergy. This is due to the fact that biomass naturally produces ethanol and that most bioenergy does not rely on ethanol to be created.
Therefore, we can confirm that Increased ethanol production is not a consequence of bioenergy use.
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Answer: less deforestation and land use
Explanation: took test
The sea dog francis drake sailed along the coast of _______
Answer: West African Coast
Explanation:Hawkins sailed with his cousin (and soon-to-be Sea Dog) Francis Drake to the West African coast in order to capture slaves for trade in the Caribbean and South America, privateering along the way.
The largest amount of DNA in plant cell is contained in
Answer:
In plant cells, most DNA is located in the nucleus, although chloroplasts and mitochondria also contain part of the genetic material
Models of both atmospheric and oceanic circulation show predictable patterns of air and water movement across the globe. The
phenomenon that MOST directly causes these atmospheric and oceanic circulation patters is
Coriolis effect is the phenomenon that most directly causes these atmospheric and oceanic circulation patterns.
What is Coriolis effect?This is defined as an apparent deflection of the path of an object that moves within a rotating coordinate system.
Atmospheric and oceanic circulation patterns aride from deflection of the direction of air and water currents moving towards or away from the poles.
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Which of the following is a negative consequence associated with both slash-and-burn and monoculture?
O Decreased yield
O Increased pollution
O Ecosystem disruption
O Reduced biodiversity
Answer:
Increased pollution I think is the right answer
PLEASE ANSWER ASAP!!
Use the drawpad to highlight or circle these four differences between the human and gorilla skeleton. Use a different color for each trait.
- The pelvis, which is longer and narrower in gorillas.
- The arm bones, which are longer in gorillas.
- The spine, which is S-shaped in humans and C-shaped in gorillas.
- The thigh bones, which are angled directly below the body in humans.
Answer:
this is it the foot is differ. The body is different
how are utah and mexican praire dogs genes alike
Answer:
In terms of genetic variation, allelic richness (A) estimated through rarefaction resulted in 1.6–3.0 mean alleles per colony, and no private alleles were found. Mean genetic diversity (HE) was 0.525 (SD = 0.11), with values ranging from 0.276 (SD = 0.25) to 0.618 (SD = 0.09).
Explanation:
Utah prairie dog (Cynomys parvidens), and Mexican prairie dog (Cynomys mexicanus)—all of which may be considered rare (Hoogland 2006a). After 200 years of shootings, poisonings, conversion of habitat, and more recently plague, prairie dog numbers are a fraction of what they once were. Two of the species (Utah and Mexican) are listed as threatened or endangered under the Endangered Species Act (ESA).
Most archaeologists believe that the __________ was one of the earliest centers of plant and animal domestication.
The answer should be Fertile Crescent.
Hope this helps!
Question: As a result (because) of diffusion, the concentration of many types of substances:
A: always remains greater inside a membrane.
B: eventually becomes balanced/equilibrium on both sides of a membrane.
C: always remains greater on the outside of a membrane.
|| ▼ Answer ▼ ||
B: eventually becomes balanced/equilibrium on both sides of a membrane.
|| ✪ Explanation ✪ ||
Diffusion is the movement of molecules from a high to a low concentration. The effect of diffusion on different substances' concentrations is balance/ equilibrium on both sides of a membrane. In the process of the movement of molecules, the concentration becomes balanced. A typical example of diffusion is a perfume sprayed inside a room. The smell of the perfume will eventually be balanced in the entire room.
Hope this helps!✪
If you have any questions please ask.✪
If the following events are arranged in the order in which they occur for an animal hiding and holding still in response to seeing a predator, which is the fourth event in the series?.
Animal hiding-holding still response follows the reflex arc sequence. The fourth event in the series is option B) signaling by efferent PNS neurons.
When the animal receives the stimuli, it responds to them. In the case of hiding-holding still response, the animal might freeze due to motor inhibition that reduces excitatory signals.
The reception and reaction to stimuli follows the reflex arc sequence.
What is reflex arc?The reflex arc refers to the sequence of events since the body receives an external stimulus until it reacts.
The correct answer is B) signaling by an efferent PNS neurons.
Note: Due to technical problems, you will find the complete explanation in the attached files.
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name a national park that is located in the Midwestern and development region
Answer:
Here are some national parks lol:
Badlands National Park (SD) Cuyahoga Valley National Park (OH) Gateway Arch National Park (MO) Hot Springs National Park (AR) Indiana Dunes National Lakeshore (IN) Isle Royale National Park (MI) Theodore Roosevelt National Park (ND) Voyageurs National Park (MN) Wind Cave National Park (SD)
Explanation:
What is the purpose of DNA replication?
to divide a genome in half
newly replicated daughter cells have instructions to make proteins
to prevent tRNA synthesis
to make new mutant offspring
Answer:
newly replicated daughter cells have instructions to make proteins
can you tell for certain if eleanor is a definite carrier for methemoglobinemia
The information about the genotype of Eleanor is not found here, but a carrier is a heterozygous individual.
What is a carrier?A carrier is an individual who is heterozygous for a given genetic condition and/or genetic mutation.
A heterozygous is an individual who has two different alleles or gene variants for a particular gene locus.
A homo-zygous is an individual who has the same allele (or gene variant) for a given gene locus.
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The inner cell mass cells of the fetus are destined to become:
What is a
theory?
A. a scientific
explanation for a set of
observations that can
be tested
B. a proven, universal
truth that states what
happens
C. a well-tested
explanation as to why
something occurs that
is generally accepted
D. an assumption
made about an
experiment
Answer:
A. A scientific explanation for a set of observations that can be tested.
Explanation:
Theories can be proven or rejected, just like hypotheses.
Hope this helps!
Your answer is A. a scientific
explanation for a set of
observations that can
be tested
Which of the following will increase the reaction rate of an enzyme reaction?
Decreasing the amount of enzyme while leaving the product amount unchanged
Decreasing the amount of product while leaving the enzyme amount unchanged
Increasing the amount of enzyme while leaving the substrate amount unchanged
Increasing the amount of substrate while leaving the enzyme amount unchanged
Answer:
Increasing the amount of enzyme while leaving the substrate amount unchanged
Explanation:
The use of dna fingerprinting relies on the fact that:.
How frontal inversion affect the environment
Convective clouds cannot go high enough to produce showers and visibility also greatly reduced due to the accumulation of dust and smoke particles.
What is frontal inversion?Frontal Inversions are the inversions that is caused by a shallow "cold air" blowing in under warmer air. An inversion traps air pollutants, such as smog, close to the ground.
So we can conclude that convective clouds cannot go high enough to produce showers and visibility also greatly reduced due to the accumulation of dust and smoke particles.
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