Fur and a layer of fat beneath mammals skin enables mammals to live in colder environments than reptiles because the amount of fur that covers a mammal's skin varies greatly like animal that live in cold region have more fur than animal that live in warmer environments.
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Unlike reptiles, birds are endothermic. They also have feathers, which conserve heat.
Lizards, like other reptiles, are not homeostatic in the way that mammals are; they get colder or warmer according to the temperature of their environment.
Its warmer temprature that reptiles produce males
While reptiles generally thrive in temperate and warmer climates, there are certain species that have adapted too much colder environments. Temperature can also determine whether a reptile is diurnal or nocturnal. In other words, temperature affects the eating habits of reptiles.
There were more glaciers and a colder climate.
Mammals fur tends to grow thicker when the weather becomes colder. Hope this helped! :)
because its nice and hot there
Earth's terrestrial environments colder and/or drier favored the evolution of seeds since seeds can withstand those environments.
Nope. But things do store longer and keep fresher in colder environments.
add cholesterol
The Sea Otter (Enhydra lutris) is adapted to an aquatic environment. As their name suggests, they are marine mammals, but unlike other marine mammals they rely on their incredibly thick fur to keep them warm--other marine mammals have blubber for the same purpose.
No because most mammals live places warmer or colder than us so they have to have a temperature that copes with the climate they're in.