Pollution, Dirty air, water, or land, Recycling, Using materials again, Deforestation, Cutting down trees, Climate change, Changes in the Earth's weather, Waste, Things that are thrown away, Environment, The natural world, Plastic, A material that can pollute the environment, Protect, To keep something safe, Global warming, To increase in the Earth's temperature, Natural resources, Things from nature that people use, Litter, Rubbish left in public places, Forest, A large area with many trees, Eco-friendly, Not harmful to the environment, Energy saving, Using less electricity or fuel, Biodiversity, Different kinds of plants and animals

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