will a 100 ml of water in a foam cup reach room temperature faster or 100 ml of water in an aluminum can reach room temperature faster?

any abiotic or biotic factor in an ecosystem that causes a population's size to slow or decrease is a limiting factor.

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.