The answer is sympathetic. It is one of two components of the
autonomic nervous system; the other being parasympathetic. The other function of
the sympathetic system is to maintain body homeostasis. Acetylcholine
is the main neurotransmitter in the preganglionic
sympathetic neurons while noradrenaline (norepinephrine) is the main neurotransmitter
in the postganglionic sympathetic neurons.
B.grass because the mass of ice,rock,dirt is heavy to grass so grass would have the least fraction of surface cost.
Answer:
The correct answer would be B. the population is evolving.
It can be explained with the help of natural selection. It is a natural phenomenon by which organisms which are better adapted to the changing environment have better chances to survive and reproduce.
It leads to a change in the allele frequency of that trait in a population.
For example, in the given population, the allele frequency of red fur increases from 20 to 30 percent. That means the population is evolving to adapt to the changing environment.
Plants play a crucial role in carbon cycle because they?
Allow
Carbon to enter the ecosystem through photosynthesis
How are humans affecting the balance of carbon in the atmosphere
Burning fossil fuels has increased
Where would an ecologist be least likely to go study primary succession?
a place that already has a ecosystem
What kind of natural disaster helps some forest communities by allowing some trees to release their seeds by cleaning away deadwood and by encouraging new growth?
A fire
