Respiratory system, because the lungs and diaphragm would get the oxygen from the air, and transfer them to the circulatory system (that's a pretty basic explanation, there's much more to it)
        
                    
             
        
        
        
A decrease in the autonomic tone of the smooth muscle in a blood vessel would result in an increase in blood flow through the vessel.
<h3>Meaning of smooth muscle</h3>
smooth muscle can be defined as a muscle in the body that is non striated and involuntary in nature.
Smooth muscles are mostly found in hollow organs, passageways and tracts of some systems.
In conclusion, A decrease in the autonomic tone of the smooth muscle in a blood vessel would result in an increase in blood flow through the vessel.
Learn more about smooth muscle: brainly.com/question/13903265
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Answer:
5.6L
Explanation:
Given parameters: 
number of moles  = 0.25mol
pressure on gas  = 1atm
temperature  = 273K
Gas constant R = 0.0821Latm/molK 
Unknown: 
Volume of gas  = ? 
Solution: 
Using the ideal gas equation, we can solve this problem. The equation is a combination of the three gas laws: Boyle's law, Charles's law and Avogadro's law. 
It is mathematically expressed as; 
              PV = nRT
where P is the pressure
            V is the volume 
           R is the gas constant 
           T is the temperature
           n is the number of moles 
All the parameters are in the appropriate units and we simply solve for the volume of the gas; 
 
                 1 x V = 0.25 x 0.0821 x 273
                       V  = 5.6L
 
        
             
        
        
        
I believe it would be C) Cellulose. As this is one of the essential components found in the cell wall of plant cells.
 
        
                    
             
        
        
        
Answer:
threaten the food webs of their invaded habitat and effect the ecosystem.