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.
Endothermic animals are those that must generate their own heat to maintain their body temperature. These animals are commonly referred to as warm-blooded.. The term endotherm comes from the Greek endon, meaning within, and thermos, which means heat. An animal that is endothermic is categorized as an endotherm, which primarily includes birds and mammals.