What functions does the muscular system perform?
it provides stability, movement, and posture.
it generates and conducts electrical signals.
it produces melanin, which protects from the sun.
it produces oil, which protects from foreign invasion.

During sunny hours, a large amount of build up between the hours of 1: 00-5: 00 pm. a. ozone b. mercury c. lead d. sulfuric acid

What evidence supports the law of conservation of energy? a) mechanical energy is converted to chemical energy during photosynthesis. b) oxygen is made from the breakdown of carbon dioxide during photosynthesis. c)energy is absorbed by chlorophyll and becomes chemical energy during photosynthesis. d)the sun gives off light energy that is absorbed by plants.

Why does it matter if osmosis is put into a “scab” or a “nosebleed? ” where would that leave him?