A change in which of the following is least likley to impact primary productivity

answer; //the above statement is (false);

multiplying and dividing the two decimals and the eqations by the same number of the overalls

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.