Explanation:
diffusion is movement of molecules from a region of higher concentration to a region of lower concentration
2a)molecules will be moving out of the cell
b)molecules will be moving into the cell
3i)molecules will be moving into the cell
ii)molecules will be moving out of the cell
iii)there is no movement since concentration is equal inside and outside the cell
 
        
             
        
        
        
The correct answer is pollution.
        
                    
             
        
        
        
<span>
C. The allele changed from being autosomal to be sex-linked.</span>
        
             
        
        
        
Answer:
C) It involves interactions between biotic and
abiotic factors.
Explanation:
Ecosystems need energy imput, need both consumers and producers, and can exist on land, lakes, rivers and oceans.