Nature and the Environment

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.... is when water and air are dirty and dangerous.

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It is our planet.

All of us should try to ________________ our planet.

The act of process of destroying something or being destroyed

All living and non-living things that occur on the planet Earth.

Something such as useful land, or minerals such as oil or coal ...

This area is said to experience a ... of fresh water

Nowadays people understand how important it is to solve ...