Rapoport's rule

Rapoport's rule is a way of understanding the patterns of how plants and animals are distributed across the world. It says that the warmer the climate is, the more kinds of different plants and animals there will be in one place. This means that if you travel from a place that is very cold to a place that is very warm, you'll see a lot more plants and animals. Generally, you see more kinds of plants and animals near the equator. This is because the same amount of heat and sunlight gets spread across a lot less area near the equator than in colder and colder areas further away from it.