Answer:
Here are the three types of contaminants: Biological: Examples include bacteria, viruses, parasites, fungi, and toxins from plants, mushrooms, and seafood. Physical: Examples include foreign objects such as dirt, broken glass, metal staples, and bones. Chemical: Examples include cleaners, sanitizers, and polishes.
Explanation:
Leptin is a chemical messenger which is secreted by fat cells that act as an appetite suppressant.
Leptin is a hormone of energy expenditure. It is made of adipose cells and helps to regulate energy balance by way of inhibiting hunger.
Both hormones they act as receptors in the arcuate nucleus of the hypothalamus. When someone is obesity, the sensitivity to leptin decreases.
TRUE. The resource is always able to be reproduced- A tree can grow even after another tree is cut down.
Zooplankton is what I would put