Answer:
Most liquid fuels in widespread use are derived from fossil fuels; however, there are several types, such as hydrogen fuel (for automotive uses), ethanol, and biodiesel, which are also categorized as a liquid fuel. Many liquid fuels play a primary role in transportation and the economy.
Answer:
Option: b. had little or no knowledge of sterilization.
Explanation:
Medical practitioners during the 17th century and 18th century had very little knowledge about the sterilization. Sterilization was little known during this period because practitioners were still learning how to treat people and did not give priority to sterilizing. Sterilizing the surgical instruments was not much in a process. It became increasing use in the late 18th century.
Answer:D
Explanation:
because The United States and Russia were at Cold war and having Cuba close to The US was dangerous since Russia could plant missiles aimed at the US
Answer:
Explanation:
The batle of the bulge was fought at a bulge in the "line" that separated. the word line refers to the front lines or the line along which most of the fighting takes place. the bulge in the line refers to a gain or loss by either side so it looks like the line is bulging. that is why it was called the battle of the bulge.
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