Capillaries: <span>any of the fine branching blood vessels that form a network between the arterioles and venules.</span>
        
             
        
        
        
<span>Factors that can increase mutation rates are high and low temperatures, food additives, and UV rays. All of these answers are correct. Mutation rates in genes vary depending on many environmental effects. UV rays, along with varying temperatures, can cause mutations during cell division due to the damage they impart on the cells that are dividing. Dangerous food additives are believed to cause mutations, as seen in animal studies (ie. aspartame causing cancer in rats).</span>
        
                    
             
        
        
        
Industrial waste! This is because the waste is in direct contact with the soil in the form of chemicals or even heat!