What is evolution and how does it change living things over time?
Life's Patient Shuffle
What is evolution and how does it change living things over time?
Imagine you could leave the planet alone for a million years and come back to check on it. The fish would look different. The bugs would look different. Some creatures you knew would be gone, and new ones would be strolling around like they'd always lived here. That slow, sneaky reshaping of life is called evolution. Nobody planned it. So how does it happen?
Here's the first secret: babies are never perfect copies of their parents. Each new creature comes with tiny random changes in its instructions — its DNA, the recipe book inside every living thing. Most changes do nothing. A few make a creature a little different: slightly longer legs, a slightly darker shell, ears that hear a little better.
