1. A person is sitting by the beach and a mosquito bites them. Could they contract HIV?
2.A person sits on a public toilet at Wal-Mart ®. Could they contract HIV?
3.Two people are in a fight outside a football game. Both are bleeding. Could they contract HIV?

1. no

2. no

3. It depends on if one of them is a carrier of the virus and the other comes in contact with the blood

well first you need the sample of the temperature and gas level. i couldnt write a hypothesis unless i had some data. i think temperature changes will effect volumes of gas because gas changed into a solid or liquid at specific temperatures.

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.