What can we do to protect the environment?, Throw garbage in the river, Plant more trees, Cut down all the trees, Wastewater, Which of the following is a renewable energy source?, Coal, Solar energy, Oil, Gas, What should we reduce to help fight air pollution?, Riding bicycles, Planting flowers, Using cars less, Recycling paper, What is global warming?, A type of weather, Increase in Earth’s temperature, Planting more trees, Cleaning rivers, What can we recycle?, Plastic bottles, Rocks, Food waste only, Sand.

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