Truman responded to the Berlin blockade by

Cardiac output is usually expressed in

Hydrothermal vents are characterized by high endemism.  This means that most of the organisms living around the vents show very little genetic variation.

One of the most famous symbols for women working in wartime industries is called 

SALT was concluded after President Nixon met with this leader from this country (Answer should be Leader’s Name; Country)

As with action potentials in other types of cells, the repolarization of cardiac muscle cells involves the

Of all the warring nations, __________ suffered the most casualties.

Match the word/concept in the left with the best answer in the dropdown.

About 70% of the ventricle filling is achieved passively without the contraction of the atria.

Shrimp trawls capture shrimp at the surface of the water. They are bad for the environment because they catch other species besides shrimp.