In mammals the powerful muscle that aids in breathing is the a. diaphragm. b. kidney. c. cerebrum. d. placenta.

Do you think the gene eef1 alpha1 supports cell theory? explain your response.

The image below shows a common blood pressure gauge. what does this device do? a. measures the level of oxygen present in the blood b. measures the pressure of blood when the lungs expand and compress c. measures the electrical activity of the heart d. measures the pressure of blood when the heart contracts and relaxes

What element is able to combine with itself and hydrogen to form large molecules ?