Natural selection could not occur without environment, and a act on animal.
1.Nucleic acids:Stores and transfers info
2.Carbohydrates:Store energy, provide fuel, and build structure in body, main source of energy, structure of plant cell wall
3.Lipid:Insulator and stores fat and energy
4.Protein:Provide structural support, transport, enzymes, movement, defense
The answer should be Atlantic Coastal Plain
Answer: D. Heat
Explanation : Water Vapor is a source of warmth, since the heat that is radiated from Earth is absorbed by the water vapor. This is why greenhouses use water vapor as well.