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

We conclude that the correct answer is the A) Algae that grow in the crystal.

Explanation:

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Let's solve this!

A biotic factor is a factor that has life.

Let's analyze each of the options:

A) Algae that grow in the crystal: algae are living beings and grow in an aquatic ecosystem.

B) Gravel at the bottom of the aquarium: gravel is an abiotic factor, that is, lifeless.

C) Amount of oxygen in the water: it is an abiotic factor

D) Water temperature: it is not a biotic factor.

After the analysis, we conclude that the correct answer is the A) Algae that grow in the crystal.

primary succession begins with a bare rock and ends with a forest secondary succession begins after a natural disaster where there is a temporary setback after a forest fire or local destruction, but the surrounding area can fill in

there is no stairs in bungalow

explanation:

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