Answer:
Explanation:
Ok so it will be the first one but it migt be the second on for the simple fact that they both use CO2 and O2 
I might be wrong because i am working on that to in my Bio class
 
        
             
        
        
        
Answer:
c)polymerase chain reaction (PCR).
Explanation:
Because the paleontologist recovered only a bit of tissue  and it is very old, it is very likely that the DNA in the sample is very small and part of it is degraded. Anyway, the paleontologist must first amplify the DNA sample to obtain many identical copies of the specific region of the DNA they want to compare. the above is done through a polymerase chain reaction (PCR). 
 
        
             
        
        
        
Answer:
The moon, sun, river, clouds, mountain, rain, water and so on.
 
        
             
        
        
        
Answer:
Your answer would be Vacuoles
Explanation:
 
        
                    
             
        
        
        
by using rooting harmone  roots develop quickly at cutting and and it become  more robust than cuttings which don't receive rooting hormone. Cutting harmone is used mostly on ornamental plants in the landscape and to propagate succulents.
It cannot apply on whole plant since it will not mix with old one and a new catergory or plant will develop and it will distroy the originality of the actual plant