That’s a hard question, but a good one.
By burning lots of oils and polluting we are adding chemicals in our air that naturally wouldn’t be there. When London used to burn lots of coal all of London used to have a black cloud above it known as smog. That’s why London is sometimes known as “the old smoke”. This made the air really dirty and not very nice to live in. But once we stopped burning lots of coal the air slowly cleared, so as long as we all work together and take care of our planet we can hopefully prevent global warming and dirty air.
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