eco-friendly product, energy-saving bulbs, energy-efficient vehicle, plant a tree, protect, public transportation, rechargable battery, recycle, reuse, reduce, renewable energy resources, sort out, switch off, solar energy, wind energy, cut down trees, exhaust fumes, fossil fuel, use pesticides, plastic bags, poisonous chemicals, pollute, throw rubbish, air pollution, water pollution, land pollution, climate change, deforestation, noise pollution, global warming,

UNIT-9-ENVIRONMENT

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