Answer:
employees tend to return to smoking when the incentive ends
 
Explanation:
because employees love to smoke on breaks and they are addicted to smoking.
 
        
             
        
        
        
The answer is (A) as <span> increasing risk of lung cancer is from increasing levels of exposure to outdoor air pollution and </span>particulate matter
        
             
        
        
        
The number 45 means that the subject has 44 normal autosomal chromosomes (22 chromosomes pairs) plus one (1) good sex chromosome (out of the normal homologous pair). The X0 means that the subject, usually a female, lacks one sister chromosome of the homologous X chromosome pair, or has a partial X sister chromosome.
 
        
             
        
        
        
The options are all related, and the answer is D) All of the Above. 
The synergistic effects of exposure to multiple toxins are more difficult to quantify and study. As a result, there is not sufficient research on how much a system can take when exposed to multiple pollutants. This lack of research also means that we often do not even know what the effect of these interactions between multiple toxins are. 
As a result of these gaps in our knowledge of the interactions between toxins, it is difficult to evaluate the threshold for pollutants, since a system will rarely feature only one pollutant in isolation. 
        
             
        
        
        
It's depends on the size of molecule. big ones cannot pass the membrane while smaller molecules can.