MULTIPLE CHOICE QUESTION
How can we reduce our negative impact on
the nitrogen cycle? (Check all that apply)
hk
use more alternative energy
use more fossil fuels
using less artificial fertilizer

because of

these muscles maintain the blood pressure in the vessels. the smooth muscles are innervated by nerves of the autonomic nervous system. when the muscles contract, they cause vasoconstriction of the vessels and increase blood pressure. when the muscles relax, they enable vasodilation of the   blood vessels hence reduce blood pressure.