CBSE Class 6 Answered

The Earth is known as a unique planet as life exists on it. This is because of the following reasons:

1. The Earth is located at an optimum distance from the Sun. Hence it is neither too hot nor too cold.
2. The Earth has an average temperature of 17°C, which is suitable to sustain all life forms.
3. The Earth has an atmosphere which is made up of gases like oxygen, nitrogen and carbon dioxide.
4. While the Ozone layer prevents the harmful rays of the Sun from entering into the Earth, carbon dioxide traps the Sun’s heat, keeping the planet warm.
5. The Earth has water which is essential for the survival of all living beings.