Pollution, damage caused to the environment (water, air by harmful substances or waste), Deforestation, the cutting down of trees in a large area or the destruction of forests by people, Climate change, change's in the world's weather - the warming up of the planet as a result of human activity, Recycling, the process of collecting and changing old paper, glass, plastic etc so that it can be used again, Renewable energy, energy that is produced using the sun, wind etc not fuels, Public transport, a system of vehicles that are open to the public and operate at fixed times and routes

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