Answer:
Norepinephrine
Explanation:
Nerve cells and circulating hormones are the one responsible for vasoconstriction of the vessel walls, as they do not enter the tunica media of the blood vessel, the nerves do not synapse directly on the smooth muscle cells. Instead, they release the neurotransmitter, norepinephrine, which diffuses into the media and acts on the nearby smooth muscle cells, which result in contraction of the entire muscle cell layer and thus reducing the radius of the vessel lumen.
Answer:
C. Carbon dioxide
Explanation:
That is the desired product
"A. cutting down most of the trees in a forest to make furniture" is the correct answer because some trees play a vital role in processing the carbon in the air.
During the lifecycle of the plant we can encounter both haploid and diploid forms.
Haploid form of the plant is called a gametophyte. This form was created from spore and enables creation of haploid gametes in the next stage.
