Suppose there are 500 units of energy available at the producer level of the energy pyramid. approximately how many units of energy are available to the first-level consumer?

a. 50
b. 5
c. 100
d. 1 .

!if we removed the wolf, snake, and hawk from this food web, what best explains the impact it would have? a) the number of producers would increase. b)the number of decomposers would increase. c)the number of primary consumers would increase. d)the numbers of primary consumers would decrease.

Plants consume most of their carbon from a. the soil b. the water c. the roots d. the air

Explain the significance of thesaurus geographicus