You rub a comb on your hair and then the comb can pick up pieces of paper. Explain why this happens.​

That is true tge cactus as a structural adaptation to its envirinment has it leaves reduced to spines. but this doesnt mean it cant produce food it produces food because of the presence of chlorophyll in its stem

Molecules called lipids have long hydrocarbon chains that determine the way they act. they can be fats, oils, or hormones, and even exist in our cell membranes 

Your answer is water because there is combined mass of water found on, under, and over the surface of a planet. your answer is water.

4) repetitive change