Lawn and farming fertilizer is harmful to the enviroment due to the abundance of chemicals. When it rain or seeped underground, the fertilizer leaked into the nearby lake and thus, all the fish died to the chemicals in the fertilizer. 
        
             
        
        
        
Answer:
The correct answer would be hybridization.
Hybridization refers to the process by which organisms of different breed, species, or varieties are selectively interbred in order to produce offspring with desired characters.
Similarly, Maltese dogs were selectively bred in order to attain characters like the small size, less shedding of hairs et cetera.
 
        
             
        
        
        
Answer:
As a cell prepares to divide, it must make a copy of each of its chromosomes. The two copies of a chromosome are called sister chromatids.
 
        
             
        
        
        
The homeostatic process is characterized by the diffusion of water molecules is known as osmosis. It is the process where solvent molecules move through a semi-permeable membrane from high solute concentration to low solute concentration.
Option B is correct.