Which condition is a biotic factor of an aquarium ecosystem?
amount of oxygen in the water
gravel on the bottom of the aquarium
algae growing on the glass
temperature of the water

The algae. a biotic factor is something that is living.

The Moon orbits Earth at an average distance of 382,400 kilometers. The lunar month is the 29.53 days it takes to go from one new moon to the next. During the lunar month, the Moon goes through all its phases. ... The phases we see result from the angle the Moon makes with the Sun as viewed from Earth.

Explanation:

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