Each environment can support a limited number of individuals of a population depending upon:

Options

A. Biotic potential
B. Natality
C. Reproductive potential
D. Carrying capacity

Explanation

To answer the question "Each environment can support a limited number of individuals of a population depending upon:", we need to analyze the provided options and understand the concepts behind them.

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks what limits the number of individuals that an environment can support. This is a fundamental concept in ecology.

2. **Evaluating the Options**:
- **Biotic Potential**: This refers to the maximum reproductive capacity of an organism under ideal conditions. While it indicates how fast a population can grow, it does not directly determine how many individuals the environment can support. Thus, this option is incorrect.

- **Natality**: This is the birth rate of a population, which is the ratio of the number of births to the size of the population. Although it contributes to population growth, it does not directly define the limits of population size that the environment can sustain. Therefore, this option is also incorrect.

- **Reproductive Potential**: This term describes the maximum reproductive capacity of a species under optimal conditions. Similar to biotic potential, it indicates growth capability but does not specify the limits imposed by the environment. Thus, this option is incorrect as well.

- **Carrying Capacity**: This is the most relevant term here. Carrying capacity refers to the maximum population size of a species that an environment can sustain indefinitely, considering the availability of resources such as food, water, and habitat. This directly answers the question, as it defines the limit to which a population can grow in a given environment.

3. **Conclusion**: Based on the analysis of the options, the correct answer is **carrying capacity**. Each environment can support a limited number of individuals of a population depending upon the carrying capacity of that environment.

### Final Answer:
Each environment can support a limited number of individuals of a population depending upon **carrying capacity**.

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