What happens in a warm front? O A A warm air mass catches up to a moving cold air mass, sliding
2. A warm air mass becomes a cold air mass as it moves.
C. A warm air mass collides with a stationary cold air mass, and
slides under it.
D. A cold air mass comes in under a warm air mass.

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

Which organelle breaks down sugar molecules that supply energy to the cell ?

The distant ancestors of tigers may have had bodies without stripes. use the theory of natural selection to explain how tigers may have evolved to have stripes.