We should: plant trees, save energy, use public tranportation, use eco-friendly bags, turn off the tap when not in use, protect the nature, stop global warming, use solar energy, recycle plastic,paper and glass, We shouldn't: cut down trees, use chemicals, give harm to the habitats of animals , throw rubbish into seas, waste water, use plastic bags, use pesticides in agriculture, destroy rainforests, pollute the environment,

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