What is the procedure/variables for the plate tectonics lab

The Theory of Plate Tectonics states that the crust of the Earth is composed of seven major

plates and numerous smaller plates. These plates “ride” on the hot plastic upper mantle called

the asthenosphere. This theory also says that most of these plates are in motion, creating

a variety of interactions at the plate boundaries. As plate boundaries, plates may converge,

diverge, or slip (lateral) past each other in a horizontal motion. In addition, some plates may

appear to be inactive.

Explanation:

blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. as the ventricle contracts, blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs where it is oxygenated.