describe blood flow through the heart starting with blood entering the right side of the heart and including all chambers and valves

Which would be the most useful source of evidence to support mcneill's contention?

Which prefix mean under less or below

Grasses--> mice--> cats--> coyotes suppose 10,000 units of energy are available at the level of the grasses. what is the total number of energy units lost by the time energy reaches the coyote?