Answer:
The answer is B trust me if you want its your dicision
Explanation:
 
        
             
        
        
        
During acclimatization over a few days to weeks, the body produces more red blood cells to counteract the lower oxygen saturation in blood in high altitudes. Full adaptation to high altitude is achieved when the increase of red blood cells reaches a plateau and stops.Heart rate is controlled by the two branches of the autonomic (involuntary) nervous system. The sympathetic nervous system (SNS) and the parasympathetic nervous system (PNS). ... At the beginning of exercise, your body removes the parasympathetic stimulation, which enables the heart rate to gradually increase.
D)all of them
 
        
             
        
        
        
As it grows, it helps the follicles grow into roots which help people find out about the scientific knowledge of fossils.
        
                    
             
        
        
        
Answer:
Atp 
Explanation:
This is the correct answer 
 
        
                    
             
        
        
        
Answer:
depending on what organisms you're talking about
Explanation:
an example would be phyto and zoo plankten. zoo plankteon eat phyto plankton which eat sunlight. those are two organisms