Question

Can anyone help me plz

Below is a photo of algae, microorganisms that live in water.
What is the role of these organisms in their environment?
A. They produce food that other organisms eat.
B. They return nitrogen gas to the atmosphere.
C. They break down the wastes of other organisms.
D. They cause diseases in many kinds of animals,

Answer 1

It’s either A or B.
They produce the food web for all aquatic organisms. So, I would go with A, but I am bot sure.
Good luck!