The answer from edge..is well in fact A...or at least  i think.. sorry if im wrong
 
        
                    
             
        
        
        
Answer:
Spread
Explanation:
People use envelopes very often. The germs people carry are put into the envelope and then it's sent out to many others.
 
        
             
        
        
        
Answer:
Hydrochloric acid contributes to protein digestion by supplying H+ which activates pepsinogen, the precursor to pepsin. Pepsinogen is secreted by chief cells in the gastric glands of the body and antrum of the stomach.
Explanation:
˙˚ʚ(´◡`)ɞ˚˙
 
        
                    
             
        
        
        
Answer:
a stationary front moves when a cold front or warm front stops moving this happens when two masses of air are pushing against each other but neither is powerful enough to move the other winds blowing parallel to the front instead of perpendicular can help it stay in place.
 
        
                    
             
        
        
        
Answer:
The right answer is D. The benthic zone
Explanation:
The limnetic and the littoral zone  all get a lot of sunlight so there are a lot of plant life. The pelagic zone hosts a variety of plant species so this cannot be the correct answer. That leaves us with the benthic zone.
Benthic meaning inhabiting bottom areas or substrates. Plant life at the bottom is very scarce but there are a lot of insect species.