If the weather gets too cold, the plants the deer eat can die causing the deer to starve to death and lower the population of the species.
        
             
        
        
        
Heavy rain , strong winds
        
             
        
        
        
Normal proteins allow the substances Na + and Cl- to move correctly through the cells of the skin, the pancreas and the lungs.
In contrast, the mutated proteins prevent them from moving through the cell, this causes mucus to accumulate in the skin, in the lungs and the pancreas, a medical condition called cystic fibrosis.
        
             
        
        
        
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
 
        
             
        
        
        
plants have a distinct, multicellular haploid phase