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If we want to explore nature, we have to protect it.
Cars and planes can make life easier. But they also make smog, which is bad for us and every living thing. Burning fossil fuels (coal, oil, gas) pollutes Earth. These fuels can only be used once. Using less fossil fuel can help protect Earth. So can recycling glass, paper, plastics, and metals. Reusing these means we use fewer precious natural resources.
What we do today has a huge effect on our world tomorrow.