Earth is our only home in universe.If we don't protect it from now on,we will have nowhere to go when the environment being ruin.Look at what we have done to our matherland.
We let out too much exhaust gas that our atmosphere is no longer clear and health for breath.In many big cities,we can hardly see a bright blue sky.
We use as much resourse as we can find,then turn them into rubbish.These rubbish is taken up more and more space in our planet.
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