There is greater biodiversity in tropical/ sub-tropical regions than in temperate region. Explain.

Explanation

### Step-by-Step Solution

1. **Understanding Biodiversity**: Biodiversity refers to the variety of life found on Earth, including the number of species, genetic diversity, and ecosystem diversity. It is essential for ecosystem stability and resilience.

2. **Geographical Distribution**: Biodiversity is not evenly distributed across the globe. It tends to be greater in tropical and subtropical regions compared to temperate regions.

3. **Solar Energy Availability**: One of the primary reasons for higher biodiversity in tropical regions is the amount of solar energy they receive. Tropical areas receive more sunlight throughout the year, which leads to:
- Increased productivity of plants (photosynthesis).
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