The answer is mitochondria
        
             
        
        
        
Answer: Missense mutation 
Explanation:
Missense mutation is a type of point mutation where a single nucleotide is changed to cause substitution of a different amino acid. This in turns render the resulting protein non-functional. 
In the case of sickle-cell disease, the sixth amino acid in the gene sequence, glutamate (GAG) is substituted with valine (GUA), due to Adenine nucleotide changed to Uracil nucleotide. Thus, missense mutation has occurred 
 
        
                    
             
        
        
        
Answer: D. They are not well adapted to the Australian climate.
Explanation:
Just took the exam
 
        
                    
             
        
        
        
Snsnsnsnsnshjsshhsshhshshshsbsbsb they told me i have to answwr a question for me to post a question what
        
             
        
        
        
Like all animals the noises they make are to warn off predators, and mating call. IDk