Answer:
Theory: <u>A theory is a carefully thought-out explanation for observations of the natural world that has been constructed using the scientific method, and which brings together many facts and hypotheses.</u>
Isotonic solution
This is a solution in which there is no net movement of water into our out of the cell when a cell is placed in this solution. The solution is also dilute.
Answer:
kidney
Explanation:
pancreas to regulate salt
I believe that you're question is referring to homeostasis
one! i wish you good luck on your test/assignment <3