Three Different Phenotypic Effects that the Alleles of the
Hemoglobin Cene Can Have

Option C

Explanation:

The plants are the producers that starts any food chain or food web.

Then comes consumers that feed on producers for their energy needs. The primary producers are generally herbivores.

The secondary consumers feed on the primary consumers for their food. They are carnivores and feed on smaller animals for their energy.

Decomposers are the organism that feed on the dead and decaying organic matter to clean the environment and recycle the nutrients back into the soil.

             Plants → Squirrel → Snake → Mushrooms

Hence, option C is correct.