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.
Characteristic of Amphibians. Amphibians posses certain characteristic those are different from other species. These characteristic helps to adopt them in all the climate conditions and environment. Amphibians are cold blooded animals that derive heat from outside. The body temperature of the amphibians depends on the outside surroundings. Hence the amphibians are very active in warm environments and become lethargic when exposed to cold temperatures. As an offspring the amphibians begin their life cycle under the water breathing through gills. As they reach the adulthood they move to land and breathe with the help of either skin or lungs. Worms and insects act as the prey to the amphibian. Each species of the amphibians have their own feeding habit.