It is defined as well idk you gotta give me options man
Conservation of Energy:
As a projectile is launched into the air KE is at its maximum. As the projectile gains altitude PE becomes greater than KE. At the top of its arc, PE is at its maximum. The whole cycle reverses itself on the way down.
What visual you have evidence would he have to see on the microscope slides to support his claim: moving components
What would be the source of the bubbles? oxygen creation
Cellular respiration occurs in both animal and plant cells
The answer is called Scope. Hope this helps.