Multiple choice

Which of the following is an abiotic factor in any aquatic ecosystem?

  1. Oxygen

  2. Plants

  3. Fish

  4. Algae

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Oxygen is an abiotic factor in aquatic ecosystems. While oxygen levels can be influenced by plants and algae, oxygen itself is a dissolved gas - a non-living chemical component. Plants, fish, and algae are all biotic (living) factors.