Question

question 6 of 10
which two statements explain why nitrogen is important to sustaining a healthy ecosystem?
a. nitrogen is part of many of the biomolecules that make up living things.
b. nitrogen is a nutrient that plants need for healthy growth.
c. all organisms can use nitrogen directly from the atmosphere.
d. all living things produce energy through cellular respiration by breaking down nitrogen.

Explanation:

Nitrogen is a key - component of biomolecules like proteins and nucleic acids in living organisms. Also, it is an essential nutrient for plant growth. Most organisms cannot use atmospheric nitrogen directly, and cellular respiration breaks down glucose, not nitrogen.

Answer:

A. Nitrogen is part of many of the biomolecules that make up living things.
B. Nitrogen is a nutrient that plants need for healthy growth.