No they have not at all ever been I recall
These are oil and gas extraction, coal mining, metal ore mining, nonmetallic mineral mining and quarrying, and mining support activities. Of all of these categories, oil and gas extraction remains one of the largest in terms of its global economic importance.
The answer is D. Knowing that cholera is spread by contaminated water, they could take necessary precautions to make sure they had clean water supplies. As illustrated in the article, the <span>"white, flocculent particles" were discovered to be in the water sample taken from a pump. When the handle of the pump was removed so no one can take water from it, the spread of the cholera disease significantly dropped. </span>
The answer is A. Scientific myths
