Aunifying concept that forms the basis of scientific investigation in a particular field is called a(n)

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

What is responsible for the uneven heating between the poles and the equator on any given day

Cells must be in osmotic equilibrium with their surroundings environments because if they swell or shrink thier membranes will rupture