Which two substances are among the four major types of organic compounds made by living things?
D A. Proteins
O B. Potassium
Oc. Carbohydrates
D. Water

If animal agriculture was eliminated, how much grain would become available for human consumption?

Eutrophication caused by human nutrient pollution.

Analyze how the water cycle affects a food web. now list 3 examples for each below using complete sentences, on how too much water would affect the same web? how about to little water?