Question

which example describes an abiotic factor interacting with a biotic factor?

more light increases the water temperature.

tropical fish need warm water to survive.

small fish are food for larger fish.

high water temperatures decrease oxygen concentration in the water.

Explanation:

First, define key terms: abiotic factors are non-living components (e.g., water temperature, light, oxygen), biotic factors are living organisms (e.g., fish).

• Option 1: Both light and water temperature are abiotic, so no biotic interaction.
• Option 2: Tropical fish (biotic) depend on warm water (abiotic) to survive, which is an interaction between the two.
• Option 3: Both small and larger fish are biotic, so this is a biotic-biotic interaction.
• Option 4: Both water temperature and oxygen concentration are abiotic, so no biotic interaction.

Answer:

B. Tropical fish need warm water to survive.