Question

energy flow
food webs
nearly all aquatic food chains and food webs use sunlight as their source of energy
producers such as phytoplankton convert the suns energy into chemical energy through
the process of photosynthesis

below is an image of a series of interconnected food chains that make up the food web
found in the great lakes

a food web is a series of interconnected food chains.
what is the source of energy for this food web?

the sun

the air

the water

Explanation:

The text explicitly states that nearly all aquatic food chains and webs use sunlight as their energy source, with producers converting solar energy via photosynthesis. This directly answers the question about the energy source for the Great Lakes food web shown.

Answer:

the sun