What is the effect on biodiversity as we move from equator to polar region ?

Options

A. In increase
B. First decreases than increase
C. It decreases
D. It remains unchanged

Answer

### Step-by-Step Solution:

1. **Understanding Biodiversity**: Biodiversity refers to the variety of life in a particular habitat or ecosystem. It includes the diversity of species, genetic diversity, and the variety of ecosystems.

2. **Location of the Equator**: The equator is an imaginary line that divides the Earth into the Northern and Southern Hemispheres. It is characterized by a tropical climate with warm temperatures year-round.

3. **Biodiversity at the Equator**: Near the equator, biodiversity is typically very high. This is due to several factors:
- **Stable Climate**: The equatorial regions experience less seasonal variation, leading to a more stable environment.
- **High Solar Energy Input**: The equator receives a greater amount of solar energy, which supports higher rates of photosynthesis and, consequently, more food availability for various organisms.

4. **Moving Towards the Poles**: As one moves from the equator towards the polar regions, several changes occur:
- **Decrease in Solar Energy**: The amount of solar energy received decreases, leading to lower temperatures and less food production.
- **Seasonal Variability**: Polar regions experience greater seasonal changes, which can affect the survival of many species.

5. **Effect on Biodiversity**: Due to the factors mentioned above:
- **Decrease in Biodiversity**: As we move from the equator to the poles, biodiversity consistently decreases. The harsh conditions and lower food availability in polar regions cannot support the same variety of life found in tropical regions.

6. **Conclusion**: The overall effect on biodiversity as we move from the equator to the polar regions is a decrease in biodiversity.

### Final Answer:
The correct option is that biodiversity decreases as we move from the equator to the polar regions.

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