Answer:
B. Himalayan
Explanation:
The highest mountain range in the world, the Himalayan Mountain Range, has formed at the boundary of the Indian and Eurasian continental masses. The India continent was a small one that separated from the much larger ancient continent Gondwanaland. As it separated, it started moving toward northeast, eventually closing down the Tethys Ocean, and colliding with Eurasia. As the two continental masses started to push against one another, the crust started to lift up because of the enormous pressure, thus gradually creating a mountain range. This process is still not over, and the Himalayas are still growing in elevation, with estimated 8 cm plus each year.
Plastic is a word that originally meant “pliable and easily shaped.” It only recently became a name for a category of materials called polymers. The word polymer means “of many parts,” and polymers are made of long chains of molecules. Polymers abound in nature. Cellulose, the material that makes up the cell walls of plants, is a very common natural polymer.
Over the last century and a half humans have learned how to make synthetic polymers, sometimes using natural substances like cellulose, but more often using the plentiful carbon atoms provided by petroleum and other fossil fuels. Synthetic polymers are made up of long chains of atoms, arranged in repeating units, often much longer than those found in nature. It is the length of these chains, and the patterns in which they are arrayed, that make polymers strong, lightweight, and flexible. In other words, it’s what makes them so plastic.
These properties make synthetic polymers exceptionally useful, and since we learned how to create and manipulate them, polymers have become an essential part of our lives. Especially over the last 50 years plastics have saturated our world and changed the way that we live.
The First Synthetic Plastic
The first synthetic polymer was invented in 1869 by John Wesley Hyatt, who was inspired by a New York firm’s offer of $10,000 for anyone who could provide a substitute for ivory. The growing popularity of billiards had put a strain on the supply of natural ivory, obtained through the slaughter of wild elephants. By treating cellulose, derived from cotton fiber, with camphor, Hyatt discovered a plastic that could be crafted into a variety of shapes and made to imitate natural substances like tortoiseshell, horn, linen, and ivory.
This discovery was revolutionary. For the first time human manufacturing was not constrained by the limits of nature. Nature only supplied so much wood, metal, stone, bone, tusk, and horn. But now humans could create new materials. This development helped not only people but also the environment. Advertisements praised celluloid as the savior of the elephant and the tortoise. Plastics could protect the natural world from the destructive forces of human need.
The creation of new materials also helped free people from the social and economic constraints imposed by the scarcity of natural resources. Inexpensive celluloid made material wealth more widespread and obtainable.
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Flotation occurred meaning that there was too much money and not enough goods
Answer:
The Phoenicians did not have the resources needed to support an empire and preferred to focus on colonization.
Explanation:
- The Phoenicians founded colonies in all parts of the Mediterranean sea. They were the first to pass through Gibraltar (pillars of Hercules).
- They had ships made of cedar wood
- They founded new colonies on these sea routes, the most famous of which was Carthage (which means -New Castle) in 814 B.C.
- They jealously guarded the secret of maritime travel & told other nations on these roads that there were dragons that swallowed sailors
