Question

1. which of the following statements best describes carrying capacity?

a carrying capacity is determined by a variety of environmental factors, and represents the approximate maximum population size in an environment.
b carrying capacity can self - adjust depending on the size of the population, allowing for further growth.
c carrying capacity remains constant over time, regardless of changes to the environment.
d when a population reaches the carrying capacity of its environment, limiting factors cause it to decrease to near zero.

Explanation:

• Option A: Carrying capacity is indeed influenced by environmental factors (like food, space, resources) and is the maximum population an environment can sustainably support. This matches the scientific definition.
• Option B: Carrying capacity does not self - adjust to allow further growth based on population size; rather, it's limited by the environment. If the population exceeds carrying capacity, it usually declines, not grows further.
• Option C: Carrying capacity is not constant over time. Changes in the environment (e.g., natural disasters, resource availability, climate change) can alter it.
• Option D: When a population reaches carrying capacity, it typically stabilizes (or has small fluctuations), not decrease to near zero. Limiting factors keep the population around the carrying capacity, not eliminate it.

Answer:

A. Carrying capacity is determined by a variety of environmental factors, and represents the approximate maximum population size in an environment.