Why are Animals Larger in Colder Environments?

Madeleine Williams, Emily Waters, Meranda Golbek, Jillian Wormington


In different regions of the world, variations in climates exist, whether minimal or extreme. As a general rule, due to the geographical various, most species increase in size from the southern hemisphere to the northern hemisphere. These differences include various bone structures, fur colors, and weights. In this study, modeling clay was used to represent different sized animals in cold climates the results showed that the smaller the surface area the greater decrease in temperature when placed in an ice bath. In conclusion, the larger the surface area of an animal the better they conserve heat.

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