Where did the world and everything in it come from? It's natural for people to be curious about this and to try to form answers.
Charles Darwin was a zoologist who traveled the world and observed different species of animals. He observed that most animals had similar body types. He also believed that animals adapted to their different environments, in ways that helped them survive. Those that couldn't adapt didn't survive. He called this idea, "Survival of the fittest."
But, he also believed that all living things could be traced back to one common ancestor. When we talk of "evolution", this is what is usually meant - that one type of animal turned into another type of animal.
However, the Bible says that God created living things "according to their kinds". The variety of species that we see today is not the result of one species turning into another. Why?
For one thing, it would've taken a very long time for all species to have evolved from the first organism (or "common ancestor"). How long? No one knows, because evolution takes so long it cannot be observed. If it can't be observed, it can't be studied in a lab. But, it could well have taken longer than the earth has even existed.
For another, you would expect to find lots of fossils representing the "in-between" forms of animals - the "ancestor" of the two modern animals. But you don't see that. What you see instead is a number of new species showing up, fully formed, in the fossil record at one time. Remember that Genesis says God created living things "according to their kinds".
