1) A
2) B
3) C
4) D
5) E
6) F
7) G
8) H
The answers are already in the picture.
        
             
        
        
        
A. community and abiotic environment
        
             
        
        
        
The answer is; Sodium (Na+) and Potassium (K+) Ions
These cations are pumped out of the cell by Na+-K+ transmembrane protein pumps leaving the inside of the cell electronegative in relation to the extracellular matrix. This membrane potential is significant especially for neurons. Depolarization of the membrane enables transmissions of an impulse along the neurons. 
 
        
             
        
        
        
Answer:
Cellular Respiration 
Explanation:
Respiration = Glucose + Oxygen -> Water + Carbon Dioxide