D
producers are plants, so they won’t attack anyone
        
             
        
        
        
a) precipitation is balanced by evaporation
 
        
             
        
        
        
Answer:
 A
Explanation:
From what I know this could be wrong, but in the four stages of natural selection, the first step is overproduction, the second step is adaptation, and the third step is competition or survival of the fittest. This means that only the organisms with the best adaptations for their surroundings will survive. COULD BE WRONG SORRY IF IT IS
 
        
             
        
        
        
Answer:
scientific method
Explanation:
the process used to.observe and test hypothesis