The sky is blue, the land is green and the sea is covered in crystal clear water. This is planet Earth, our home.
Hold on, Earth is sick! She looks awful and there is a hole in the ozone. The air is polluted, and the oceans are contaminated.
Only the people can protect and conserve the Earth. Come on! Let's start a mental revolution to love our environment and protect the Earth.
Hold on, Earth is sick! She looks awful and there is a hole in the ozone. The air is polluted, and the oceans are contaminated.
Only the people can protect and conserve the Earth. Come on! Let's start a mental revolution to love our environment and protect the Earth.
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固定
關鍵字詞： 科學