The heart holds many mysteries. Connect the dots to uncover one of them: how much blood flows through its chambers.
In the lungs, what waste product does deoxygenated blood exchange for more oxygen?
What happens to the oxygen in blood when it leaves the heart?
Aligned with Next Generation Science Standards (NGSS):
K-LS1-1. Use observations to describe patterns of what plants and animals (including humans) need to survive.
1-LS1-1. Use materials to design a solution to a human problem by mimi