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Our planet Earth is our home. It’s big and nice. There are a lot _ forest, mountains, rivers, lakes, seas and oceans. The forests are full _ animals.

The oceans are full of fishes. We live because we breathe air, drink water and eat food, growing _ our planet. _ hundreds of years nature has been serving people. They didn’t think _ it. Industrial progress has caused certain ecological problem. Factories and plants put waste _ the atmosphere and water. Air in big cities is awful because of transport. Forests are burnt _ fires caused by careless people. A lot of animals and birds are killed or die _ them.

Chemical wastes kill fish _ the rivers, lakes, seas and oceans. Can we solve the problem _ pollution? Yes, if we plant trees.

They clean air _ our cities. We mustn’t make fires in the forests.

We must help animals and birds and not disturb wildlife.

Nature riches will not last forever. It’s our duty to do our best to protect the environment.