Answer:
The oil produced in United States is light and low sulfur content and they do not have proper processing facilities, hence purchase it from other countries.
Explanation:
About 9.93 million barrels per day U.S purchase oil from 86 countries. Because the crude oil present is not homogeneous in nature. It is very light in nature with low sulfur content or may be high,this particular factor depends upon the method of the refining. Most of the oil are being exported by the Saudi Arabia and then comes Russia followed by Iraq. Despite the collapse in price, U.S. dependence on foreign oil should continue to decrease.
Answer:
Virus can survive independently for many years.
Explanation:
independently because they cant live if they cant connect to the host cell
Silent mutation and point mutation, the third C was turned into a G (point mutation) but this did not affect the amino acid it was supposed to code for (silent mutation)
