Mollusks are a major food source for other organisms, including humans.
Mollusks in the diorama include snails and clams.
Snails are a major food source for other organisms, including humans.
What are a major food source to organisms including humans?
a. leeches
b. earthworms
c. snails
d. plants
e. tapeworms
f. trees
g. potatoes
h. bushes