Describe how populations with substantial genetic differences can form. What is the role of natural selection

Which osmotic and ionic strategies must marine teleost fishes employ?

Many animals cannot sweat to maintain a stable body temperature. what is one other way animals can cool down?

Ronald wants to see if a new shower cleaner works better in removing soap than his old cleaner. he uses the new cleaner on one half of the shower tiles and his old cleaner on the other half. identify the independent and dependent variables in this experiment. enter your answer in the space provided.