Pesticide use can be very harmful beacause too much of them can cause the crops to go bad, and kill bees which help spread pollen and enhance the crops. 
        
                    
             
        
        
        
This is not a question. Do you need anything answered?
        
             
        
        
        
A scientific theory is an explanation of an aspect of the natural world that can be repeatedly tested and verified in accordance with the scientific method, using accepted protocols of observation, measurement, and evaluation of results. Where possible, theories are tested under controlled conditions in an experiment.
        
             
        
        
        
Answer:
prokaryotic are unicellular organisms
eukaryotic are multicellular
Prokaryotic need only one parent to reproduce
Eukaryotic need 2 parents to reproduce
Explanation: