Answer: False, it is transported as bicarbonate
Explanation: Carbonic anhydrase is an enzyme belonging to the family of metalloenzymes that catalyzes the conversion of carbon dioxide and water to ions and carbonic acid. This enzyme is found in red blood cells where carbon dioxide enters by diffusion. Once it diffuses through it is then converted by carbonic anhydrase to bicarbonate and hydrogen ions. 
That is how its transported in bloodstream, passes through the heart via the venous system, to the lungs. Therefore the answer is False.
 
        
             
        
        
        
Blood typing can identify if will is the father or not by the composition of the genotype and it’s compatibility within the parents. 
Will can not be the parent as there is only one possible genotype composition of blood type AB being i^Ai^B.
        
             
        
        
        
Answer:
B. Hardness
Explanation:
Physical properties of a substance is defined as the properties which can be observed or measured without changing the composition of matter. 
Physical properties include odor, appearance, color, texture, boiling point, melting point and many others.
Hardness is a physical property of a substance as it describes the  resistance of substance to deformation and can be observed by simple touch or without changing the composition of matter.
While reactivity, toxicity and flammability are chemical properties of substances that change one type of matter into another type.
Hence, the correct option is B.
 
        
             
        
        
        
The build up in the child's ear prevent sound from reaching the eardrum.
        
             
        
        
        
I think it's <span>a=F/m ; F=m/a=1200 kg x 3.0 m/s^2 = 3600 N</span>