Answer:
cell wall
Explanation:
Animal cells do not have a cell wall
 
        
             
        
        
        
An individuals head with the similarity of a frog mind or has no throat.
        
             
        
        
        
Answer:
the answer would be B the production of human insulin
 
        
             
        
        
        
The west Nile Virus is pathogen which caused the West Nile fever and encephalitis. The pathogen was introduced in 1999 in the Western Hemisphere and infected a major population in new york. It then expanded to 12 states and district of columbia. The major carrier of the pathogen was Avian and Mosquitoes species. In between 1999 to 2008, nearly 2500000 people were infected and nearly 1500 people died. Also there were thousands of cases of encephalitis or meningitis.
 
 
        
             
        
        
        
The term is called a theory.
In scientific investigation, a theory is a well substantiated explanation of how a particular phenomenon works based on the set of facts which had been repeatedly confirmed through observations and experiments. A scientific theory gives reliable account of a phenomenon.