Answer:
Groundwater is the water available under Earth's surface in soil pore spaces and in the fractures of rock formations. A unit of rock also known as a unconsolidated deposit is called an aquifer when it can yield a usable quantity of water.
Explanation:
I believe the correct answer is theory
Changes in blood volume affect arterial pressure by changing cardiac output. An increase in blood volume increases central venous pressure. This increases right atrial pressure, right ventricular end-diastolic pressure and volume.