The united states because were the best hahahahahaha
I belive both are... I am taking the class now...
The inhalation of mercury vapor can produce harmful effects on the nervous, digestive and immune systems, lungs and kidneys, and may be fatal. Mild, sub-clinical signs of central nervous system toxicity can be seen in workers exposed to an elemental mercury level in the air of 20 μg/m3 or more for several years.
The two statements which are necessary to make the conclusion in the beginning of the question true include:
b) Ben is in the pool.
d) All the boys in the pool are swimming.
<h3>What is Conclusion?</h3>
This is referred to as the final or concluding part of something or an essay and usually contains the summary.
For it to be true that Ben is swimming then he has to be in the pool and all the boys present must be swimming for us to arrive at such conclusion.
Read more about Conclusion here brainly.com/question/26093731
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