Nucleic acids store hereditary information. Think about DNA! DNA stands for dioxiriboNUCLEIC ACID. Your DNA determines everything about you’
        
                    
             
        
        
        
Answer: The threats of environmental changes to the fitness, survival and reproductive success of individuals, and ultimately to the survival of species and ecosystems come from many directions: habitat destruction, disruption of food chains, changes in disease and parasitic loads, increased pollution and direct and indirect
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A. The organism has a large nose, because it's homozygous.
 
        
             
        
        
        
Answer:
If I where to guess I would say b and c.
sorry if its not correct 
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Answer:
B. Cartilaginous fish
Explanation:
Sharks have a cartilaginous skeleton. Cartilage is less dense than bone which allows sharks to move quickly through the water without using too much energy.