Natural selection can lead to the formation of a new species which is called

Suggest why placing wheels under a heavy box reduces the neccessary force required to push it along at a constant speed.

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

When a cell is in a solution that has the same concentration of water and solutes as its cytoplasm, the cell is said to be in a(n) solution. a. isotonic b. hypotonic c. hypertonic b. facilitated