In , scientist set up conditions in which hypothesis can be tested.

Melting glaciers is a serious threat to the environment what is the possible consequence of melting glaciers on polar bears?

Some birds look for food near cattle and other livestock. the movement of the cattle churns up the ground, making insects available to the birds. the cattle appear to be unaffected by the presence of the birds. what kind of relationship exists between the birds and the cattle? o a. parasitism o b. commensalism o c. predation o d. mutualism

Discuss the functions of epithelial connective nerviud and muscular tissues