Wednesday, 26 September 2012

Vocabulary-Sentence

1. If we careless,the ecosystem will be dangerious.
2. Drainage Basin is an extent of lan where water from rain or snow melt drains downhill into a body of water.
3. Animals stories harmful substance in the body because we are using more pesticides.
4. People are one of the part of food chain.
5. We need to protect the ecosystem.

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