What is the difference between saturated &unsaturated fats

Explain why in any given geographical region, women tend to have lighter skins( by 3-4% on average) than men?

What would happen to the nutrients in an ecosystem if decomposers, such as bacteria, didn’t exist there?

Which of the following is true of metabolism in its entirety in all organisms? a) metabolism depends on a constant supply of energy from food. b) metabolism uses all of an organism's resources. c) metabolism consists of all the energy transformation reactions in an organism. d) metabolism manages the increase of entropy in an organism.