Multiple Choice
The nitrogen cycle is one of the most important and complex of the biogeochemical cycles. Why is nitrogen important?
A) It's an Ozone depleting gas.
B) It's an essential part of biological molecules such as proteins and nucleic acids (DNA)
C) It's the most toxic element to living organisms
D) Nitrogen dilutes the oxygen in the atmosphere causing respiratory problems
Correct Answer:

Verified
Correct Answer:
Verified
Q64: Nitrogen gas accounts for what percentage of
Q65: Define competition. Compare and contrast intraspecific competition
Q66: What important role do decomposers play in
Q67: Which of the following is an example
Q68: In order for a parasite to be
Q70: How would an ecologist classify both the
Q71: Which statement BEST portrays the American robin
Q72: Which of the following statements is TRUE?<br>A)Predation
Q73: A realized niche is the totality of
Q74: Which of the following series is organized