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Decreae in species diversity in tropical...

Decreae in species diversity in tropical countries is mainly due to

A

urbanisation

B

pollution

C

deforestation

D

soil erosion

Text Solution

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The correct Answer is:
### Step-by-Step Solution: 1. **Understanding the Question**: The question asks about the main reason for the decrease in species diversity in tropical countries. 2. **Identifying Possible Causes**: The potential causes mentioned are urbanization, pollution, deforestation, and soil erosion. 3. **Analyzing Each Cause**: - **Urbanization**: While urbanization can lead to habitat loss, it is not the primary cause in tropical regions. - **Pollution**: Pollution affects biodiversity, but its impact is less significant compared to other factors in tropical countries. - **Soil Erosion**: Soil erosion can lead to habitat degradation but is often a consequence of other activities like deforestation. - **Deforestation**: This is the process of clearing forests, which directly removes habitats for many species. 4. **Conclusion**: The primary cause of decreased species diversity in tropical countries is deforestation. This process leads to the loss of habitats for both plant and animal species, significantly impacting biodiversity. 5. **Supporting Evidence**: Tropical rainforests, which are rich in biodiversity, have seen a drastic reduction in area due to deforestation. Originally covering more than 60% of the Earth’s surface, only about 6% remains due to human activities. ### Final Answer: The decrease in species diversity in tropical countries is mainly due to **deforestation**. ---
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