The best example of hypothesis which leads to new experiment methods was done by Morgan where he used fruit flies.
Thomas Hunt Morgan continues on genetic research which is of Gregor Mendel.
 
        
                    
             
        
        
        
Explanation:
Single lensed Microscope for observing bacteria and protozoan
 
        
                    
             
        
        
        
During a dehydration reaction, two monomer molecules are covalently bonded to each other, with the loss of a water molecule. In this reaction, each monomer contributes part of the water molecule that is released during the reaction. This reaction is repeated as monomers are added to the chain one by one, making a polymer.
        
             
        
        
        
3) decrease 
Without the green house effect, earth would be like a solid ball of ice and rock.
Life as we know it wouldn't exist without greenhouse gases. 
The temperature would drop below 0° Fahrenheit!