an animal that does not have a backbone
an organism that lives on or in another organism, called a host and
causes harm to that organism
a living thing that support a parasite
an animal with a soft body that is not divided into segments
an animal with an outer skeleton, jointed appendages, and a body
divided into separate parts, called segments
a part that extends out from the body, such as wing, a leg an arm or
an arthropod with two body segments and five pairs of legs
an animal with a backbone
having a body temperature that changes with the environment.
having a body temperature that stays fairly constant.
a cold blooded vertebrate with wet,slippery skin and two pairs of
legs: able to live on both land and water.
a cold blooded land vertebrate, usually with four legs and clawed toes.
to move long distances each year to reach warm areas and better
a warm blooded vertebrate that has hair on its body; the mother's
body makes milk to feed its young.