These molecules can be saturated or unsaturated O Carbohydrate
O Lipids
Proteins
Nucleic Acid

Which conditions are necessary for natural selection to occur? select all of the answers that apply. a. inheritable adaptations vary among individuals. b. the population size is increasing. c. more individuals are born than can survive. d. fitness varies among individuals. e. the environment changes suddenly and drastically.

Identify the structure in organisms that do not have kidneys that is adapted to regulate water balance

What problem would a person most likely have if her kidney did not work correctly?