What is substance abuse?

Substance abuse means taking drugs (other than those prescribed by a doctor for a specific illness) in amounts that are dangerous or that prevent a person from doing everyday things, like going to school or work. The substance being abused can be alcohol, marijuana, pills called tranquilizers that make people feel very tired or relaxed, household products that are inhaled, or a number of other drugs.

Drug abuse happens all over the world, to all kinds of people, young and old. It frequently causes terrible damage to a person’s body, to relationships with family and friends, and to career or education. In some cases, substance abuse leads to death, because the abuser gets involved in an accident or because he or she overdoses, or takes enough of the substance to cause the body to completely shut down.

Which is the largest state (in area), and which is the smallest?

Alaska, the northernmost and westernmost state of the United States, is the largest state of the Union, covering 571,951 square miles (more than 1.4 million square kilometers). It makes up the extreme northwestern region of the North American continent and is separated from Asia by the 51-mile- (82-kilometer-) wide Bering Strait. Alaska has been a part of the United States since 1867, when it was bought from Russia by Secretary of State William H.

Seward for $7.2 million. The smallest state is Rhode Island, which covers just 1,045 square miles (2,706 square kilometers). Rhode Island—officially named the State of Rhode Island and Providence Plantations—was the first of the 13 original colonies to declare independence from British rule (on May 4, 1776) and the last to ratify the United States Constitution (on May 29, 1790).

When were coins first used?

Coins were first made in the seventh century B.C.E. in Lydia, Asia Minor (presentday Turkey). They were issued by the early Lydian kings—probably Alyattes or Sadyattes— about 600 B.C.E., several decades before the reign of the famous Lydian king Croesus. Lydian coins were made out of electrum, a mixture of gold and silver, and each was weighed and stamped with a lion’s head, the king’s symbol. About 0.03 pounds (14 grams) of electrum was one stater (meaning “standard”). A stater was about one month’s pay for a soldier. Today’s coins are not made from precious metals like gold and silver, but from inexpensive alloys such as cupro-nickel, which is a combination of copper and nickel. Unlike early coins, the metal in today’s coins is worth far less than its value in the marketplace.

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Who was Matilda in the song “Waltzing Matilda”?

In the Australian song “Waltzing Matilda,” a billabong is a pool of stagnant water. A swagman was someone who carried around everything he owned in a knapsack. Waltzing meant hiking, and Matilda wasn’t a woman but rather an Australian word for a knapsack. So Waltzing Matilda means: walking with my knapsack.

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How does a coffeemaker cook up the morning’s brew?

With the most common coffeemaker, the drip coffee machine, hot water drips down freely onto ground coffee beans to make coffee. The water inside the machine’s water bucket is heated as it passes along a heat-resistant tube. The tube goes into the drip area and releases heated water, just below boiling temperature (212 degrees Fahrenheit [100 degrees Celsius]). The water is heated by a heating element (a resistive heating coil that gives out heat when electricity is passed through it). The heating element has direct contact with the water inside the water bucket, and also heats the heating pad on which the glass coffee container is rested. Today, most models of coffee machines are either semi-automatic or automatic. Buttons and switches have replaced the manual coffee straining and lever-pushing of espresso machines. And some machines now have special features, such as built-in coffee bean grinders and froth makers.

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In modern warfare, is it infantry or machines that determine the outcome?

Machines win modern wars. A 1947 study found that during the Second World War, only about 15 to 25 percent of the American infantry ever fired their rifles in combat. The rest, or three-quarters of them, simply carried their weapons, doing their best not to become casualties. The infantry’s purpose is not to kill the enemy, but rather to advance on and then physically occupy his territory.

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How do bats fly in dark?

When bats fly they produce ultrasonic sound waves which are reflected back to them from the obstacles in their way and hence they can fly without difficulty.

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