True or false: each mineral is made of an element, or a combination of elements, that are arranged in a definite repeating structure.

Which of the following occurs most often in a population when genetic variation and overproduction are present? some organisms have a lower reproductive success than others. some organisms have a higher reproductive success than others. some organisms have no reproductive success. some organisms do not have genetic variation.

Describe the response the kidneys have to dehydration and excessive water intake. what happens to the concentration of urine in each case ?

What was darwins theory of common decent