How do the biotic and abiotic components of an ecosystem interact?

Ocean waves move up and down in circles, but transmit horizontally toward the shore.

How many years would it take the atlantic ocean to grow 500 centimeters? show your work.

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