Answer:
b)eutrophication
Explanation:
have you ever seen a lake or body of water with a layer of green on top? That's eutrophication due to heavy amounts of growth nutrients (primarily from runoffs from agriculture) in water. Simple plants utilize those and grow very fast. As they grow, they take up the oxygen and make water oxygen poor. These produce deadzones cuz the water life basically suffocates to death due to less oxygen. Eventually plants will also die
 
        
             
        
        
        
<span>It is possible with weight loss and exercise to discontinue the use of antidiabetic medication.</span>
        
             
        
        
        
Birds-Migratory
Freshwater Fish-local endemic 
Large predators-sparse distribution
        
             
        
        
        
Store and transmit genetic information: nucleic acid
Are primarily used to store energy: lipids
Help regulate cell processes: proteins
Are used for main source of energy: carbohydrates