red blood cells need iron. they store iron and typically contain more iron than the fluid around them does. which action would show the red blood cells doing active transport?

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

Antoine manages a number of apartment buildings that use natural gas for heating, cooking, and laundry. the scatter plot shows the correlation between the outside air temperature and antoine's natural gas bill. which type of correlation does the plot illustrate?

Which of the following explains why a tree is often used as a model to represent the principle of common descent