The pumping of the heart involves the alternate contraction and relaxation of the chambers of the heart. The upper chambers of the heart are called

, and the lower chambers of the heart are called

.

12. Classification of the Protozoa is based on a) Motility b) Cellular structure under the microscope c) All of the above d) None of the above

What changes in the food industry created the Western diet and can be linked to chronic diseases such as coronary heart disease, diabetes, stroke and cancer?

A skeleton is found with smooth brow ridges, sub pubic angle of 101 degrees, a small mastoid process, and narrow hip bones. Is the skeleton a biological male or female? Justify your answer with an explanation on how you came to your conclusion.

The mediastinum is located within the the cavity

What energy transformation occurs in plants

Which process would enable a white blood cell to ingest a bacterium?

Elements are composed of atoms of at least two different types. a. True b. False

The flat area surrounding the mouth of the Mississippi River is covered with rich sediments important to farming in this area. These sediments are deposited at a rate of 80,000 tons per year.

What place are sloths found?

In a solution of salt and water, which component is the solute? a. salt b. water c. beaker d. oxygen c