Question

Which of the following is an example of abiotic factors affecting an ecosystem? I. quantity and quality of water II. amount of light available III. nitrogen fixing bacteria IV. quantity of mineral  A. I and II only B. I, II, and III only C. I, II, and IV only D. I, II, III, and IV ​

Answer 1

ABIOTIC FACTOR

Which of the following is an example of abiotic factors affecting an ecosystem?

ANSWER

The correct answer is letter C. I, II, and IV only.

III. Nitrogen-fixing bacteria is an example of a living being (biotic) , so it isn't an abiotic factor that affects the ecosystem. While quantity, quality of water, amount of light (sunlight), and quantity of mineral in the soil are all examples of abiotic factors (non-living elements) that make difference in the environment.