What is the most probable reason for the increasing predator population from day 5 to 7?

There is no attachment, but I will hazard a guess at increased prey.

Explanation:

a marine ecosystem, algae are able to use sunlight and inorganic materials to make their own food. Clams feed on the algae by filtering them out of the water. Which organisms are primary consumers.

Explanation:

not too sure but maybe in the hot springs.