âº a gradual process of change and development. âº biology Evolution is the process by which the physical characteristics of types of creatures change over time, new types of creatures develop, and others disappear. (Definition of âevolutionâ from the Cambridge Academic Content Dictionary Â© Cambridge University Press)
You can remember the difference between endotherms and ectotherms if you remember that endo- means inside endo- = inside and ecto- means outside ecto- = outside, so endotherms generate their own heat from within, and ectotherms get their heat from the outside.
Animals that live in these harsh conditions by reducing the body heat that is lost of the environment. Some of the physical adaptations of animals in cold climate are as follows: Thick coats that are windproof or waterproof - Most of the animals in the Polar Regions have a coat that is either windproof or water proof.