Heat from the sun makes it through near the Antarctic (where the hole is) is melting the ice and not allowing some key species to feed. seals don't have ice to come up for air through like normal so polar bears starve. loss of land means less food for a lot of species because the hunting grounds is closing and there is no room to expand.
        
             
        
        
        
Two key characteristics of a good scientific investigation are hypothesis and observation of whatever organism your studying.
        
             
        
        
        
Answer:
The information carried by DNA is incorporated in a code specified by the: specific nucleotide sequence of the DNA molecule. The enzyme DNA ligase is responsible for: linking short DNA segments.
Explanation:
 
        
             
        
        
        
Answer:
C. Light intensity 
Explanation:
they need light to grow so they stay near the ocean surface because that's where the most light is