Algae at the beginning of a food chain would be considered a. primary consumers. b. primary producers. c. heterotrophs. d. decomposers.

Which element forms the basis of all organic organisms a carbon b oxygen c hydrogen d nitrogen

Why is the theory of evolution important? it disproves all other theories about how life began. it provides a topic for debate. it is a unifying concept in biology. it explains how life began. i know for sure, it is not "it is a unifying concept in biology."

2. sketch the inside of the bean nodule, and describe or label what you observed with the hand lens.