What are endangered species ? How many animals and plants are endangered in India ?

Explanation

### Step-by-Step Solution:

1. **Definition of Endangered Species**:
- Endangered species are groups of organisms (either animals or plants) whose populations have significantly decreased, and their habitats have been reduced to a level that poses an immediate risk of extinction. These species are not likely to survive if the factors threatening their existence continue.

2. **Criteria for Endangerment**:
- A species is classified as endangered when it faces threats such as habitat loss, poaching, pollution, climate change, and other environmental pressures that lead to a decline in their population.

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