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Joe: I think they’re oceans.
Ms Guo: Yes, they are. The Earth was very clean and
beautiful in the past, but now some parts are dirty.
Can we do anything to help the Earth?
Alice: Yes. We should stop throwing rubbish into rivers.
Peter: We should stop cutting down so many trees.
Kitty: We should stop using plastic bags.
There is air and water on the Earth. There are people, animals and plants on the Earth. People have lived on the Earth for millions of years. Many years ago, the Earth was clean. Today, there is air pollution, water pollution and land pollution.
People cut down the forests. Many plants, wild animals, birds and insects live there.
People kill animals for food and their skins. People are polluting the land, the water and the air.
It is important for us to protect the Earth.
We should stop throwing rubbish into rivers.
We should stop cutting down so many trees.
We should stop using plastic bags.
We should stop throwing rubbish into rivers.
We should stop cutting down so many trees.
We should stop using plastic bags.
Let’s read！
Ms Guo: Look at this picture. What is it?
Kitty: It’s the Earth.
Ms Guo: The green and brown parts are forests and land.
What are the blue parts?
Joe: I think they’re oceans.
Ms Guo: Yes, they are. The Earth was very clean and
beautiful in the past, but now some parts are dirty.
Can we do anything to help the Earth?
Alice: Yes. We should stop throwing rubbish into rivers.
Peter: We should stop cutting down so many trees.
Kitty: We should stop using plastic bags.
Ms Guo: