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.
Warm-blooded means that at rest, the animal keeps its body warm and above the temperature of its surroundings. Cold-blooded means that at rest, the animals body temperature â¦is the same as that of its surroundings. Cold-blooded animals have to warm themselves up (usually by sunning them selves or by vibrating their muscles) before they become active while warmblooded animals are already warm and ready for action.