Question 7 of 25
Tropical rain forests support more species per unit area than any other
terrestrial ecosystem. What role do rain forests play in the health of the
biosphere?
A. Their colorful birds attract many tourists.
B. Their productive organisms quickly recycle nutrients.
Ο Ο Ο
C. They breed germs in pooling rainwater.
D. They keep plants from overtaking the planet.
SUBMIT
