The variety of species and their ralative abundance present within a region is

Options

A. Genetic diversity
B. Species diversity
C. Ecological diversity
D. Relative abundance

Answer

To solve the question about the variety of species and their relative abundance present within a region, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Terms**:
- We need to identify what is meant by "variety of species" and "relative abundance".
- "Variety of species" refers to the different types of species present in a particular area.
- "Relative abundance" refers to how common or rare each species is in comparison to others in that area.

2. **Identify the Options**:
- The question provides four options:
1. Genetic diversity
2. Species diversity
3. Ecological diversity
4. Relative abundance

3. **Analyze Each Option**:
- **Genetic Diversity**: This refers to the variation of genes within a species, not the variety of species themselves.
- **Species Diversity**: This term encompasses both the variety of species in a given area and their relative abundance.
- **Ecological Diversity**: This refers to the variety of ecosystems within a region, not specifically the species.
- **Relative Abundance**: This term only refers to the abundance aspect, not the variety of species.

4. **Select the Correct Option**:
- Since the question specifically asks for the combination of the variety of species and their relative abundance, the correct answer is **Species Diversity** (Option 2).

5. **Conclusion**:
- Therefore, the variety of species and their relative abundance present within a region is best described as **Species Diversity**.

### Final Answer:
The variety of species and their relative abundance present within a region is called **Species Diversity** (Option 2).

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