Blood pressure peaks when the heart contracts, pumping blood into the arteries and causing them to stretch - this is called the
__________ pressure. blood pressure is at its lowest when the heart relaxes, called the ___________ pressure. a "normal" blood pressure for a young adult is said to be 120/80, and these numbers represent these two different pressures.
This sample will absorb less energy because the more water, the harder it is to absorb all of the water. The other sample has less so the sand can absorb it more easily.
