Question

1. if the number of nitrifying bacteria decreased what effect would this have on the nitrogen cycle and what type of compounds would accumulate as a result? 14. plants and animals (and all other living things) are part of all the natural cycles through food chains and food webs. name the four classes of carbon - containing molecules used by living things, and explain how the nitrogen and carbon cycles contribute to the usable supplies of these macromolecules.

Explanation:

13.

Nitrifying bacteria convert ammonia to nitrites and then to nitrates. A decrease would slow the conversion, causing ammonia to accumulate and disrupt the nitrogen - cycle as plants rely on nitrates for nitrogen uptake.

The four classes are carbohydrates, lipids, proteins, and nucleic acids. The carbon cycle provides carbon for building these molecules. The nitrogen cycle supplies nitrogen for proteins and nucleic acids. In the carbon cycle, carbon is exchanged between the atmosphere, organisms, and the soil. In the nitrogen cycle, nitrogen is fixed, converted, and used by organisms.

Answer:

The nitrogen cycle would slow down as the conversion of ammonia to nitrates is impaired. Ammonia - containing compounds would accumulate.

14.