How to protect the environment?, save electricity, use renewable sources of energy, sort out rubbish, use public transport, environmental problems, global warming, greenhouse effect, water contamination, deforestation, endangered species, natural disasters, flood, earthquake, tsunami, volcanic eruption, hurricane, avalanche, firest fires/wild fires, natural places, mountains, river, valley, peninsula, island, lake, waterfall

Environment

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恢復自動保存: ?