Answer: rhino
Just because I said so
        
                    
             
        
        
        
It is the circulatory system and respiratory system.
        
             
        
        
        
Frozen red blood cells that have been thawed, deglycerolized and reconstituted in an open system must be used within 24 hours.
Cryopreservation of Red blood cells (RBCs) can be done with a long time span of usability of 10 years. Glycerol safeguards RBCs during freezing and defrosting, yet it can cause hemolysis if it is not washed off or eliminated before transfusion. When a unit has been deglycerolized, the shelf life of RBCs in an open system is only 24 hours, bringing about sporadic utilization of Frozen RBCs from the outset of the procedure or in close system cases it is up to 14 days. 
Learn more about Blood transfusion here,
brainly.com/question/15314284
#SPJ4
 
        
                    
             
        
        
        
Answer:
Biotic factors are just everything living (bio-) in an ecosystem. So they're bound to vary in every ecosystem, based on the biome, climate, other food sources available, et cetera.
Do you see flamingoes in the forest? No, you say? Well, they're living; they're biotic factors. They aren't in a forest or a jungle ecosystem because that's not their habitat and they don't thrive there.