Why are bacteria a necessary part of the nitrogen cycle?
A. Other living things cannot use atmospheric nitrogen.
B. Other living things cannot use the nitrogen in plants.
C. Bacteria are the main nitrogen reservoir.
D. Bacteria are the main nitrogen transpirators.
Please help me answer this question!! ;)

Evolution acts upon the population of organisms and not on each individual organism

Which process takes place last in the human being which process takes place last in the development of a human being

All fats are part of a larger group known as lipids. lipids come in a variety of forms in food, including triglycerides, phospholipids, and sterols. choose the statement below that correctly describes the types of lipids found in foods. all fats are part of a larger group known as lipids. lipids come in a variety of forms in food, including triglycerides, phospholipids, and sterols. choose the statement below that correctly describes the types of lipids found in foods. triglycerides contain two fatty acids attached to a glycerol backbone. the body does not manufacture phospholipids, so they must be included in the diet. about 95% of the fat you eat is in the form of sterols. sterols like cholesterol have a ring structure.