Avalid hypothesis must be testable.
a. true
b. false

People who exercise for an hour may have lower cholesterol levels. is that a statement? a law? or a hypothesis?

Which medullary index indicates a human hair? a. 0.653 b. 0.733 c. 0.516 d. 0.256

Earths energy sources include both renewable and nonrenewable resources. name at least three sources of energy that could be used in your house. then describe the ideal energy source for generating most of your homes electricity, and explain why you chose that source. can someone give me some ideas, i’m kinda confused.