They saw how smoking effected the body since smoking was pushed as something good for a long time, a lot of people started smoking and after a few years doctors finally saw a difference between a smokers body and a non smokers body
        
             
        
        
        
D westerlies 
Because the west wind of flowing well west
        
                    
             
        
        
        
The probability that they both were planted alone is 0.3325. 
<h3>What is genetic probability?</h3>
Probability serves to mathematically estimate the possibility of events that happen by chance, that is, as a matter of luck.
In this case:
- Number of plants planted alone = 134
- P(both plants were planted alone) = 134/232 x 133/231 = 0.3325
So the probability that  both were planted alone is 0.3325. 
See more about genetic probability at brainly.com/question/851793
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Hereditary diseases and cancer are ways in which inherited factors can affect a persons health