Answer:
C DNA and Protines 
Explanation:Nuclear DNA does not appear in free linear strands; it is highly condensed and wrapped around nuclear proteins in order to fit inside the nucleus.
 
        
             
        
        
        
Answer:
Human activities have a tremendous impact on the carbon cycle. Burning fossil fuels, changing land use, and using limestone to make concrete all transfer significant quantities of carbon into the atmosphere. ... This extra carbon dioxide is lowering the ocean's pH, through a process called ocean acidification.
Explanation:
 
        
             
        
        
        
Answer:
The answer is Haploid. Human reproductive cells contain a single set of chromosomes and are known as haploid.
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