Bone found at the lower-back area of the cranium
        
             
        
        
        
B. it makes your results more convincing
Explanation:
It is important to conduct multiple trials in an experiment because it makes results more convincing. 
Multiple trials removes and spreads error from one or more steps in experiment. 
- The ability to reproduce result in an experiment is known as precision. 
- Precision is very important in experiments. 
- When a scientist carries out multiple trails in an experiment, it helps to remove any likely error that might have been carried into the experiment. 
- Multiple trials are key to efficiency of experiments. 
- From the results we can confidently state findings based on statistically backed data obtained. 
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<span>a medicine that inhibits the growth of or destroys microorganisms</span>
        
                    
             
        
        
        
Answer:
American's portion sizes have become larger in the last decade due to the expanding of food industries and marketing campaigns that tell us to eat more.
 Explanation:
The growth of food industries in the last decades to obtain more money in combination with the media influence has led us to eat more, thus why the size of our portions has increased their size.
Another theory states that people always want to eat more, and the industry has only fulfilled this demand, but it is not clear why, in the past, this did not happen.