Which can be an indicator of ecosystem health?
a. climax communities
b. ecosystem decline
c. biodiversity
d. endemic

Explain the importance of producers, primary consumers, secondary consumers and decomposers in an ecosystem.

The use of dna as evidence in criminal investigations became possible because of the

The following image is of a diatom. it lives in water and gets food from photosynthesis. it is encased in a hard shell made of something similar to glass or sand . a diatom is a(n) because it has a) multi-celled organism; specialized parts. b) vertebrate; a skeleton. c) insect; an exoskeleton. d) single-called organism; only one cell.