Why is there no air on the Moon?

I was asked two questions a few weeks ago and I’ve been pondering the answers ever since: Why is there no air on the Moon? And how does our air stay on Earth?

Moon Day 12
Moon Day 12

These fantastic questions got me thinking about my answers to What is air made of? and Why are there no trees on the Moon?. But neither of those quite answered these new questions. So, after much deliberation, here’s my answer!

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Why do monkeys still exist?

“If humans evolved from monkeys, why do they still exist?” asked one of the children at my daughter’s school. It’s a great question about the theory of evolution and how there came to be so many different types of creatures on Earth.

monkey children

There are many different forms of life on Earth – from bacteria and fungi, to plants and animals.

Evolution is a theory that explains how there came to be so many different types of living thing on Earth. It describes the gradual changes that happen when creatures reproduce in combination with changes to the places in which they live.

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