Species diversity______as we move away from the _______towards_____.
(a) decreases, equator, poles
(b) increases, equator, poles
(c) decreases, poles, equator
(d) none of these

Options

A. decreases, equator, poles
B. increases, equator, poles
C. decreases, poles, equator
D. none of these

Explanation

To solve the question "Species diversity______as we move away from the ______towards_____", we need to analyze the relationship between species diversity and geographical locations, specifically the equator and the poles.

### Step-by-Step Solution:

1. **Understanding Species Diversity**:
- Species diversity refers to the variety of species present in a particular area, which includes both species richness (the number of different species) and species evenness (how evenly individuals are distributed among those species).

2. **Geographical Context**:
- The question mentions moving away from the equator towards the poles. The equator is known for its rich biodiversity due to its warm climate and stable environmental conditions.

3. **Latitudinal Gradient**:
- Biodiversity exhibits a latitudinal gradient, meaning that species diversity tends to be higher near the equator and decreases as one moves towards the poles. This is due to various factors such as temperature, habitat availability, and seasonal variability.

4. **Conclusion**:
- Based on the understanding that species diversity decreases as we move from the equator (low latitude) towards the poles (high latitude), we can fill in the blanks in the statement.

5. **Final Answer**:
- Therefore, the correct option is (a) decreases, equator, poles.