Question

Which of the following statements does NOT relate to the nitrogen cycle?

a.) deforestation causes soil erosion
b.) increased use of fertilizers caused eutrophication
c.) diversity in aquatic ecosystems is reduced
d.) algae grows beyond its carrying capacity

Answer 1

The answer is; A

The nitrogen cycle is key to the living organism because it is a constituent of basic biomolecules such as DNA. In the atmosphere, nitrogen exists as gaseous N2 while in the soil it is fixed by nitrogen-fixing bacteria into ammonia for plants. The element is a significant limiting factor in ecosystems.