Which of these is not one of the three challenges of life? a. reproducing b. obtaining energy c. running d. maintaining structure (homeostasis)

Cells tend to have a relatively small and uniform size. why aren’t cells larger?

Why do mutations in genes affect traits? o a. genes determine what type of mutagens an organism has. o b. genes produce proteins that cause traits. o c. genes affect how many chromosomes an organism has o d. genes code for carbohydrates that influence traits.

What are charcteristics of lithosphere?