Question

Someone help!

Answer 1

??

Answer 2

A coral reef ecosystem might include all of the following organisms: phytoplankton, clams, octopus, moray eel and barracuda. The following shows a basic food chain of these organisms:

Basic food chain

In this food chain which organism is considered to be the primary consumer?
the phytoplankton because it is the first organism in the food chain
the clam because it is the first organism to feed on another organism
the octopus because it is the first organism to feed on another animal
the barracuda because it is at the top of the chain

Answer 3

a