Question

Which condition is a biotic factor of an aquarium ecosystem?

O amount of oxygen in the water
temperature of the water
O
algae growing on the glass
O
gravel on the bottom of the aquarium
​

Answer 1

The answer is the algae one!

Step-by-step explanation:

I took the K-12 test and got 100%!

Answer 2

Algae growing on the glass

Step-by-step explanation:

biotic means it's alive, while abiotic means it's not alive