Answer:
Find the base of the experiment
Explanation:
If i tested how high my new jumping boots could go, then i would first have the person jump without them and then jump with them. I would use the control (without the shoes) and compare it to how high the person went WITH them on.
If it is a healthy environment then the atmosphere will be happy meaning no dirty streets etc
C. the crust and upper mantle
The Answer IS AEROBIC RESPIRARTION because it’s The breakdown of food to create energy in the presence of oxygen.