Natural selection

Natural Selection

Natural selection is a way that animals and plants change over time. It helps them live better and have more babies. This idea became well-known because of Charles Darwin. He thought that animals with helpful traits would survive and have more babies.

Darwin compared natural selection to artificial selection, where people choose which animals or plants to breed. Nature does this on its own. If an animal has a trait that helps it live better, that trait might become common in the group.

Natural selection is very important in biology. Darwin and another scientist, Alfred Russel Wallace, shared this idea in 1858. Darwin wrote a famous book about it called On the Origin of Species by Means of Natural Selection, or the Preservation of Favoured Races in the Struggle for Life in 1859.

Scientists today still study natural selection. It helps us understand how life on Earth changes and grows. Even though we now know more about genes, Darwin’s ideas were a big start.

Natural selection works in simple ways. Animals pass traits to their babies. Some animals have traits that help them survive. These animals are more likely to have babies. Over time, helpful traits become more common.

For example, some moths changed color during a time when trees were darker. Dark moths were better hidden from birds. More dark moths survived and had babies. This is natural selection in action.