PS: PLEASE DO NOT PUT A LINK IN THE ANSWER SECTION! THERE ARE 4 QUESTION. 1. which term describes primary producers?
a. herbivores
b. abiotic
c. decomposers
d. autotrophs

2. why is a food chain is the simplest model of energy flow between trophic levels in an ecosystem?
a. because it represents only one pathway of energy flow
b. because it only considers producers and primary consumers
c. because it is more complex then a food web

3. which of the following are visual models to represent the flow of energy between trophic levels in an ecosystem? (choose all that apply)
a. energy pyramid
b. food pyramid
c. food web
d. food chain

4. why are primary producers also referred to as autotrophs?
a. they are able to transfer energy throughout an ecosystem
b. they are able to change chemical energy into light energy
c. they are able to transform energy from an unusable form to a usable form
d. they are able to release energy from other organisms on an ecosystem