What forms a new substance with different chemical and physical properties

Paint and solvents pose no potential hazard to human health. select the best answer from the choices provided t f

Just a quick question. will give pointswhat is the root word of "blood."it is written in my homework as hemat(o) : blood. so, should i write that the root word as hemat or hemato or hemat(o). i'm really confused.

Which rate indicates the number of children that would be born per women if she were to live to the end of her child-bearing years