Biology

Keith Cooley

2 January, 02:39

What is true of matter in ecosystems?

A. The primary productivity of an ecosystem does not depend on the availability of nutrients.

B. Living things can recycle elements within an ecosystem as long as decomposers are present.

C. Matter flows in a one-way direction with a 10% loss at each move up in trophic level.

D. Elements continuously cycle between the physical environment and living organisms.