A spasm is a sudden, involuntary contraction of a muscle, a group of muscles, or a hollow organ such as a heart, or a similarly sudden contraction of an orifice.It most commonly refers to a muscle cramp which is often accompanied by a sudden burst of pain, but is usually harmless and ceases after a few minutes. spasm is a sudden, involuntary contraction of a muscle, a group of muscles, or a hollow organ such as a heart, or a similarly sudden contraction of an orifice.
Top 10 largest Cement Producing Countries in the World. China has the first stage in the list of cement producing countries. They produce more than 2482 million tonnes. It is mainly used for construction and china is highly populated.
The United States became the worldâs largest natural gas producer in 2010, ousting Russia for the top spot. The United States also ranks as the worldâs largest producer of oil and natural gas combined. Now, it is also the largest producer of oil and natural gas liquids. Texas and North Dakota Oil Production. The United States produced 8.4 million barrels per day of oil in April 2014âthe highest monthly production volume in 27 years âwith Texas and North Dakota accounting for nearly half of the total.