What is an endangered species ? Give an example of an endangered plant and animal species each ?

Explanation

### Step-by-Step Solution:

1. **Definition of Endangered Species**:
- An endangered species is a type of organism that is at risk of extinction. This means that the population of these species is decreasing, and if conservation measures are not taken, they may disappear completely from the planet.

2. **Characteristics of Endangered Species**:
- Endangered species are identified based on their declining population numbers. Regular assessments or censuses reveal that their numbers are diminishing over time.

...