Which two statements are true for both compounds and mixtures?

Compound is madeup of more than one element which are chemically combine with each other in fixed ratio by mass while mixture is madeup of more than one substances which cannot combine with each other chemically.

Explanation:

Elements present in a compound can be separated from one another by chemical methods while mixture can be separated through physical methods. Bonds are formed between the elements of compounds while there are no bonds present between elements of mixture.

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.