A. Keeps carbon dioxide from escaping atmosphere
and slows diffusion
B. Prevents bicarbonate formation and slows
photosynthesis
C. Provides fossil fuels and recycles carbon dioxide
D. Prevents carbon dioxide from entering
atmosphere and dissolves fossil fuels
        
             
        
        
        
Answer:
used in an experiment as a way to ensure that your experiment actually work
Explanation:
 
        
             
        
        
        
Answer:
it is known as the powerhouse of he cell
Explanation:
this is because it extracts energy from food through cellular respiration
 
        
             
        
        
        
On that for the defintions if you just go back to the first section they normally have all the definitions in the reading part
        
             
        
        
        
Answer:
 I think it's A. The contraction of the triceps muscle causes the arm to flex.
Explanation:
The contraction of the triceps muscle causes the arm to flex. The contraction of the triceps muscle causes the arm to extend. When added to the force of the biceps contracting it provides the extra force to the ball.