2 would be A because fertilization is where the sperm cell and egg unite. 3 would be C because in the picture you can see how the division is occuring.
        
             
        
        
        
Answer:
Each FADH2 yields about 1.5 ATP via oxidative phosphorylation. 
Explanation:
Most of the ATP molecules are produced by oxidative phosphorylation, not by substrate-level phosphorylation. During glycolysis, 2 ATP molecules per glucose are produced by substrate-level phosphorylation. Similarly, Kreb's cycle also yields 2 ATP per glucose by substrate-level phosphorylation. 
For each pair of electrons transferred to O2 from FADH2 via electron transport chain, 4 and 2 protons are pumped from matrix towards the intermembrane space by complex III and complex IV respectively. It generates the proton concentration gradient required to drive the synthesis of 1.5 ATP molecules. Since oxidation of FADH2 is coupled to the phosphorylation of ADP to form ATP, the process is called oxidative phosphorylation.  
 
        
             
        
        
        
Answer:
 is used to locate and track severe storms, and follows the path of storm systems.
Explanation:
 
        
                    
             
        
        
        
Answer:
list of three devices are 1st phone 2nd doorbell 3rd alarm clock
Explanation:
if these devices will not produce sound then we can not do our work properly these are very useful for everyday life