I can answer when you say if you are talking about cells or no
Answer:
C. top soil has more organic matter.
Explanation:
It's more fertile than subsoil, due to having more organic matter and because fertilizers are usually added to the topsoil only.
In animals, an important function of enzymes is to help digest food. Digestive enzymes speed up reactions that break down large molecules of carbohydrates, proteins, and fats into smaller molecules the body can use... hope this helps
It is water pollution, since you are polluting the river.
Hope I helped!
It is intended to increase immunity against that antigen back to protective levels, after memory against that antigen has declined through time.
