The answer is pollution, because solar energy is costly, difficult to maintain, and fairly complex.
Answer:
saliva is slightly acidic and helps break the food down it also allows it to have a easier time going down your throat
Explanation:
saliva is acidic it coats the food in itself once it in your mouth Wich makes it easier to chew and swallow
More variation assists with survival. It increases the chance that at least some offspring of a parent survive.
Answer:
True.
Explanation:
All fingerprints are invisible to the n4k3d eye.
