Which one of the following is one of the characteristics of a biological community?

Options

A. Sex-ratio
B. Stratification
C. Natality
D. Mortality

Answer

To answer the question "Which one of the following is one of the characteristics of a biological community?" we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Definition of a Biological Community**:
- A biological community refers to a group of different species that live together in a specific geographical area at a particular time and are interdependent on each other.

2. **Identify the Characteristics of a Biological Community**:
- Biological communities have several defining characteristics, including:
- **Stratification**: This refers to the vertical layering of different species within a community. For example, in a forest, there are layers such as trees, shrubs, and ground cover.
- **Species Interdependence**: Members of a biological community rely on each other for resources, such as food and shelter.
- **Diversity**: A biological community typically includes a variety of species.

3. **Evaluate the Given Options**:
- The options provided are:
- **Sex Ratio**: This refers to the ratio of males to females in a population, which is more relevant to population studies rather than community characteristics.
- **Stratification**: This is a characteristic of biological communities, as it describes the vertical structure of the community.
- **Mentality**: This term is not typically used in the context of biological communities.
- **Mortality**: While mortality rates can affect populations, they do not define the characteristics of a biological community.

4. **Select the Correct Answer**:
- Based on the evaluation, the correct answer is **Stratification**, as it is a characteristic that defines the structure of a biological community.

### Final Answer:
**Stratification** is one of the characteristics of a biological community.

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