Environment - natural or physical surroundings where plants and animals live, Non-Living Environment  - rocks, soil, air, climate, Living Environment - animals, birds, fish, insects and people, Ecosystem - interaction of plants and animals with their non-living surroundings, Natural Ecosystem  - community of plants and animals unaffected by human activity, Biome - large ecosystem such as a desert or tropical rainforest,

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恢復自動保存: ?