The answers are
1. nitrogenous
2. acid-base
3. fluid
<span>Vasopressin, or the other name Anti Diuretic Hormone (ADH), has the action of causing the opposite (anti) of a diuretic. I.e., it causes the body to retain sodium, thus retaining water. This has many physiological effects, the majority of which focus around enabling the body to maintain homeostasis when water intake or hydration levels drop.</span>
When limiting factors increase, diversity in populations decreases. In this sense "limiting factors" can be anything from a lack of resources to a lack of food, meaning it's harder for the population to survive.
It is surrounded by it's environment.
