Biotic factors include which of the following?

• A. Water
• B. Temperature
• C. Living organisms
• D. Weather patterns

Answer: (C)

Biotic factors are the living parts of an environment—the organisms themselves and how they interact. This includes plants, animals, fungi, bacteria, and the relationships among them, like predation, decomposition, and symbiosis. Abiotic factors are the nonliving parts, such as water, temperature, and weather patterns. In the options given, water and weather patterns describe nonliving aspects, while living organisms describe the living components. So, the best choice is the one that refers to living organisms.