Gloger's rule

Gloger's rule is something that helps us understand how animals living in cold places are different from animals that live in warm places. It is named after a scientist called Constantin Gloger who studied animal populations.

So, the rule says that animals that live in cold places tend to have darker coloration than animals that live in warm places. This means that polar bears, which live in very cold places, are white because their fur helps them blend in with the snow. But, a panda which lives in a warm forest has black and white fur.

The reason for this is because of something called adaptation. Animals that live in cold places need to stay warm because it can get very cold outside. Dark colors help them do this because they absorb more heat from the sun. So, animals living in cold places have evolved to have dark colored fur to keep them warm.

In contrast, animals that live in warm places don't need to worry about staying warm because it is already hot. In fact, having dark colored fur would make them even hotter. So, animals living in warm places have evolved to have lighter colored fur to help them stay cool.

So, in summary, Gloger's rule is a way to help us understand why animals that live in cold places tend to have darker colored fur, and why animals that live in warm places tend to have lighter colored fur.