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What are some facts about the Ozark Mountains?

These heavily forested highlands are known for their caves, natural beauty, and river and lake fishing. They are a popular quiet tourist spot, but they also are mined for lead and zinc. It is thought that the name "Ozark" came from "Aux Arc," which was a trading post established by the French in the 1700s.\nThe Ozarks have been often featured in fiction, most notably Harold Bell Wright's "The Shepherd of the Hills." The Mark Twain National Forest is located in the Ozarks in southern Missouri.

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When was the last time Kilauea erupted?

The Kilauea volcano erupts from two primary locations. The summit located at the Halema'uma'u crater continually vents and displays a plume in the sky. The east rift zone, which was created by the initial eruption called Pu'u 'O', pushes lava northwest through a forest.\n\nSince 1983, the constant flow of lava into the ocean has created approximately 500 acres of new land but has also destroyed hundreds of homes. The volcano and the area surrounding it remains dangerous to visitors.

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How are seasons formed?

The NASA Space Place explains that, in the northern hemisphere, summer occurs during the portion of the Earth's orbit when the northern hemisphere is pointed toward the sun. This not only increases the amount of warmth that the hemisphere receives, but lengthens the amount of time the sun is in the sky. On the other side of the orbit, the opposite effect occurs, cooling the hemisphere and shortening the days. The other six months of the year, the hemisphere is neither pointed toward or away from the sun.\nSince one hemisphere is pointed away from the sun while the other is pointed towards..

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Where is the element silver found?

Silver extraction begins with chemical flotation separation. This process involves pulverizing ore, mixing it with hydrophobic chemicals and dumping the slurry into a tank of water. The chemicals bond preferentially with metal particles and form tiny air bubbles around them. The metals float to the surface of the separation tank, and the rest of the crushed ore sinks to the bottom. Refinery workers collect the concentrated metal particles and proceed to the next step in the silver extraction process.\nRefiners use several methods to extract silver from concentrated ore. Refiners choose the app..

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What will destruction of forests cause?

Another consequence of forest destruction is the loss of communities and culture, according to Green Peace. Indigenous people who live in the forests of Indonesia, Papa New Guinea and the Solomon Islands are driven from their homes when deforestation occurs. Additionally, their food sources are destroyed and the water from which they drink becomes polluted, which leads to disease. Green Peace states that less than 5 percent of the value of the logs taken from the forest is given to the people who live on the land.\nDeforestation also has harmful effects on the environment, which include the re..

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Why is cellulose important?

Plants are far and away the most important producers on land. The cellulose that covers each plant cell makes most parts of plants inedible to any animals without specialized digestive functions. Indeed, animals cannot digest cellulose at all without the aid of special microorganisms that live in their guts. For animals that eat leaves or wood, such as termites or cows, cellulose is the primary source of energy. These animals are often the main food sources for all the predators in an ecosystem. Cellulose is the molecule that is the fiber in any plant-based food and is the reason that only pla..

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What is electric current measured in?

Charges flow through a circuit at a constant rate, meaning that the electric current is the same at any point in the same circuit. Electric current is closely related to voltage, measured in volts, and resistance, measured in ohms. The mathematical equation of their relation states that current is equal to voltage divided by resistance.

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How did the planet Uranus get its name?

The British astronomer who discovered the planet in 1781 initially attempted to name it after King George III, but other astronomers formed a consensus to continue in the tradition of naming planets after ancient Greek and Roman gods. Diverging from that tradition, several of Uranus' moons are named after figures from the plays and poetry of William Shakespeare and Alexander Pope, including the largest two moons, Oberon and Titania.

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What is the formula for potassium nitride?

Nitrides are important compounds for both commercial and everyday use. For example, the ammonia, NH3, is a common nitride that is formed when hydrogen bonds to nitrogen. Ammonia can be made by mixing nitrogen with water; this is a fixation reaction that is catalyzed by nitrogenase. Nitrogenase is an enzyme that is characterized by its ability to reduce nitrogen, which is a reaction that gives off energy. Aside from the function and properties of nitrogenase, little is known about the catalysis that it stimulates.Additionally, nitrides are formed from oxides and hydrides of nitrogen. Oxides are..

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What is the pKa of amino acid?

When in the carboxylic acid group, most amino acids have pKa values of just over 2, with only histidine falling below with a pKa of 1.77. An acid with a pKa value below 2 is considered a strong acid, while those above are considered weak acids. Amino acids in the amino group have pKa values ranging from the high 8s to the low 10s.

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