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The Near East Civilizations Week 2
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The Ancient Near East - First CivilizationsTHE NEAR EAST - WEEK FIVETHE ANCIENT NEAR EAST WEEK 4Early Empires in the Ancient Near East Review1. What calm area near the Equator is characterized by minimal wind movement? Answer: Doldrums 2. What are visible accumulations of tiny water droplets or ice crystals in the air called? Answer: Clouds 3. Which cloud type is high, thin, and made of ice crystals? Answer: Cirrus 4. What do we call the apparent deflection of winds and currents due to Earthâs rotation? Answer: Coriolis effect 5. In which hemisphere do storms rotate clockwise? Answer: Southern Hemisphere 6. What are winds that blow consistently from one direction over a specific area called? Answer: Prevailing winds 7. What is the area where prevailing winds meet called? Answer: Convergence zone 8. Which wind zone blows from the polar regions toward the mid-latitudes? Answer: Polar easterlies 9. In which hemisphere do storms rotate counterclockwise? Answer: Northern Hemisphere 10. Which wind zone blows from west to east across the mid-latitudes? Answer: Westerlies 11. What are the calm areas around 30° north and south latitude with little precipitation called? Answer: Horse latitudes 12. What winds blow toward the Equator from the northeast in the Northern Hemisphere and from the southeast in the Southern Hemisphere? Answer: Trade winds 13. Which cloud type is mid-level and blankets the sky, often bringing overcast weather? Answer: Stratus 14. Which cloud type is puffy and can bring heavy rain or snow depending on height? Answer: Cumulus 15. What prefixes indicate the height of clouds in the atmosphere? Answer: Cirro-, alto-, nimbo-hysical features of Southeast Asia The physiography of Southeast Asia has been formed to a large extent by the convergence of three of the Earthâs major crustal units: the Eurasian, Indian-Australian, and Pacific plates. The land has been subjected to a considerable amount of faulting, folding, uplifting, and volcanic activity over geologic time, and much of the region is mountainous. There are marked structural differences between the mainland and insular portions of the region. Mainland Southeast Asia The mainland is characterized by a series of generally northâsouth-trending mountain ranges separated by a number of major river valleys and their associated deltas. In many ways these ranges resemble ribs in a fan, where the interstices are deep trenches carved by the rivers. Although the mainland as a whole is similar in a structural sense, its various geologic components and the time periods of their orogenic (mountain-building) episodes differ. Much of the region has been affected by the gradual, continuing collision of the Indian subcontinent with the Eurasian Plate over roughly the past 50 million years, an event thatâwith diminishing intensity from west to eastâhas been responsible for deforming the land. Nonetheless, mainland Southeast Asia is relatively stable geologically, with no active or recently active volcanoes and, except in the northwest and north, little seismic activity. The ranges fan out southward from the southeastern corner of the Plateau of Tibet, where they are tightly spaced. A major rib of this system extends through the entire western margin of Myanmar (Burma); describing an elongated letter S, it consists of (from north to south) the PÄtkai Range, NÄga Hills, Chin Hills, and Arakan Mountains. Farther to the south the same rib emerges from beneath the sea to become the Andaman and Nicobar Islands of India. Another major system extends along a straight north-south axis from eastern Myanmar east of the Salween River through northwestern Thailand to south of the Isthmus of Kra on the Malay Peninsula. It consists of a series of elongated blocks rather than one continuous ridge. The core of these blocks is granite, which has intruded into previously folded and faulted limestone and sandstone. The altitudes of the ranges diminish from above 8,000 feet (2,440 meters) on the Chinese border in the north to below 4,000 feet on the Isthmus of Kra, and the ranges are spread farther apart toward the south. The easternmost major mountain feature on the mainland is the Annamese Cordillera (ChaĂźne Annamitique) in Laos and Vietnam. In the portion between Laos and Vietnam, the chain forms a nearly straight spine of ranges from northwest to southeast, with a steep face rising from the South China Sea to the east and a more gradual slope to the west. The mountains thin out considerably south of Laos and become asymmetrical in form. The upland zone is characterized by a number of plateau remnants. The rather neat fanlike pattern of the mountain ranges is interrupted occasionally by several old blocks of strata that have been folded, faulted, and deeply dissected. These ancient massifs now form either low platforms or high plateaus. The westernmost of these, the Shan Plateau of eastern Myanmar, measures some 250 miles (400 km) from north to south and 75 miles from east to west and has an average elevation of about 3,000 feet. The largest of these features is the Korat Plateau in eastern Thailand and west-central Laos. This area actually is more of a low platform, which on average is only a few hundred feet above the floodplains of the surrounding rivers. It consists of a string of hills that direct surface drainage eastward to the Mekong River. The hills range in elevation from 500 to 2,000 feet, with the highest altitudes occurring near the southwestern rim. The broad river valleys between the uplands and the even wider deltas at the southernmost points contain most of the mainlandâs lowland areas. These regions generally are covered with alluvial sediments that support much of the mainlandâs cultivation and, in turn, most of its population centers. The most extensive coastal lowland is the lower Mekong basin, which encompasses most of Cambodia and southern Vietnam. The Cambodian portion is a broad, bowl-shaped area lying just above sea level, with numerous hill outcrops jutting above the landscape; at its center is a large freshwater lake, the Tonle Sap. To the south the riverâs vast, flat delta occupies the entire southern tip of Vietnam. Outside the river deltas, the coastal lowlands are little more than narrow strips between the mountains and the sea, except around the southern half of the Malay Peninsula. The Malay Peninsula stretches south for some 900 miles from the head of the Gulf of Thailand (Siam) to Singapore and thus extends the mainland into insular Southeast Asia. The narrowest point, the Isthmus of Kra (about 40 miles wide), also roughly divides the peninsula into two parts: the long linear mountain ranges of the northern part described above give way just south of the isthmus to blocks of short, parallel ranges aligned north-south, so that the southern portion trends to the southeast and becomes much wider. In areas such as the west coast between southern Thailand and northwestern Malaysia, distinctive karst-limestone landscapes have developed. Peaks on the peninsula range from 5,000 to 7,000 feet in elevation.Write question 2. Early British Actions in the Colonies In 1760, near the end of the Seven Yearsâ War, a new British king, George III, began his reign. During his 59-year rule, he resisted revolutionary and Napoleonic France. However, George appointed advisors to manage his more distant foreign affairs in North America. These advisors knew very little about the day-to-day lives of colonists and were soon taking actions that enraged many of them. The Proclamation of 1763 The British government faced many problems after the Seven Yearsâ War. One was how to protect colonists and their land claims as they pushed westward into areas settled by Indigenous groups. In his Proclamation of 1763, George III said to simply draw a line down the crest of the Appalachian Mountains and order colonists not to settle past the boundary. To colonists whose fortunes were founded on Indigenous land, the kingâs order suggested tyranny, or the unjust use of government power. They argued that White colonists had already claimed most of the land east of the Appalachians and that farmers had to move west to find land. Besides, colonists and land investors had already crossed the mountains into Indigenous territory. The British government ignored colonistsâ arguments. To control the frontier, it sent an additional 7,500 soldiers to the colonies. The Proclamation of 1763 would later be cited as a grievance in the Declaration of Independence. The Stamp Act The British government had other problems besides stopping colonists from encroaching on Indigenous land. Another dilemma was how to pay off the large debt from the Seven Yearsâ War. The solution seemed obvious to Prime Minister George Grenville, the leader of the British government. People in Great Britain were already paying taxes on everything from windows to salt. In contrast, American colonists were among the most lightly taxed people in the British Empire. It was time, said Grenville, for them to pay their fair share of the cost of Britain protecting colonists and their interests. In 1765, Grenville proposed a new act, or law, called the Stamp Act, which required colonists to buy a stamp for every piece of paper they used. Newspapers, wills, licenses, and even playing cards had to be printed on stamped paper. Again, the colonists sensed tyranny. One newspaper, The Pennsylvania Journal, said that as soon as âthis shocking Act was known, it filled all British America from one End to the other, with Astonishment and Grief.â It was not just the idea of higher taxes that upset the colonists. They were willing to pay taxes passed by their own assemblies, in which their representatives could vote on them. However, because the colonists had no representatives in Parliament, they saw the Stamp Act as a violation of their rights as British subjects. For this reason, they argued Parliament had no right to tax them. âNo taxation without representation!â they declared. Loyalists simply refused to buy stamps, while other colonists protested the Stamp Act by sending messages to Parliament. Patriots took more aggressive action. Protesters calling themselves the Sons of Liberty organized in 1765 and began attacking tax collectorsâ homes. In Connecticut, they even started to bury one tax collector alive. Only when he heard dirt being shoveled onto his coffin did the terrified tax collector agree to resign from his post. After months of protest, Parliament repealed, or canceled, the Stamp Act. Colonists greeted the news with great celebration. Church bells rang, bands played, and everyone hoped the troubles with Great Britain were over. The Quartering Act As anger over the Stamp Act began to fade, Parliament passed another controversial law in 1765. The Quartering Act ordered colonial assemblies to provide British troops with quarters, or housing. The colonists were also told to furnish the soldiers with âcandles, firing, bedding, cooking utensils, salt, vinegar, and . . . beer or cider.â Providing these things for British soldiers cost money. New Jersey protested that the new law was âas much an Act for laying taxesâ on the colonists as the Stamp Act. New Yorkers asked why they should pay to keep troops in their colony during peacetime. In 1767, the New York assembly decided not to approve any funds for supplies for the British troops, forcing them to remain on their ships. In retaliation, the British government suspended New Yorkâs assembly until it agreed to obey the Quartering Act. Once again, tempers began to rise on both sides of the Atlantic.Figure 18-11 represents the amount of energy stored as organic material in each trophic level in an ecosystem. The pyramid shape of the diagram indicates the low percentage of energy transfer from one level to the next. On average, 10 percent of the total energy consumed in one trophic level is incor- porated into the organisms in the next. Why is the percentage of energy transfer so low? One reason is that some of the organisms in a trophic level escape being eaten. They eventually die and become food for decomposers, but the energy contained in their bodies does not pass to a higher trophic level. Even when an organism is eaten, some of the molecules in its body will be in a form that the consumer cannot break down and use. For example, a cougar cannot extract energy from the antlers, hooves, and hair of a deer. Also, the energy used by prey for cellu- lar respiration cannot be used by predators to synthesize new bio- mass. Finally, no transformation or transfer of energy is 100 percent efficient. Every time energy is transformed, such as during the reactions of metabolism, some energy is lost as heat. Limitations of Trophic Levels The low rate of energy transfer between trophic levels explains why ecosystems rarely contain more than a few trophic levels. Because only about 10 percent of the energy available at one trophic level is transferred to the next trophic level, there is not enough energy in the top trophic level to support more levels. Organisms at the lowest trophic level are usually much more abundant than organisms at the highest level. In Africa, for exam- ple, you will see about 1,000 zebras, gazelles, and other herbivores for every lion or leopard you see, and there are far more grasses and shrubs than there are herbivores. Higher trophic levels con- tain less energy, so, they can support fewer individuals.A population is a group of organisms that belong to the same species and live in a particular place at the same time. All of the bass living in a pond during a certain period of time make up a pop- ulation because they are isolated in the pond and do not interact with bass living in other ponds. The boundaries of a population may be imposed by a feature of the environment, such as a lake shore, or they can be arbitrarily chosen to simplify a study of the population. The humans shown in Figure 19-1 are part of the pop- ulation of a city. The properties of populations differ from those of individuals. An individual may be born, it may reproduce, or it may die. A population study focuses on a population as a wholeâhow many individuals are born, how many die, and so on. Population Size A populationâs size is the number of individuals that the population contains. Size is a fundamental and important population property but can be difficult to measure directly. If a population is small and composed of immobile organisms, such as plants, its size can be determined simply by counting individuals. Often, though, individ- uals are too abundant, too widespread, or too mobile to be counted easily, and scientists must estimate the number of individuals in the population. Suppose that a scientist wants to know how many oak trees live in a 10 km2 patch of forest. Instead of searching the entire patch of forest and counting all the oak trees, the scientist could count the trees in a smaller section of the forest, such as a 1 km2 area. The scientist could then use this value to estimate the population of the larger area. SECTION 1 OBJECTIVES â Describe the main properties that scientists measure when they study populations. â Compare the three general patterns of population dispersion. â Identify the measurements used to describe changing populations. â Compare the three general types of survivorship curves. VOCABULARY population population density dispersion birth rate death rate life expectancy age structure survivorship curve FIGURE 19-1 A population can be widely distributed, as Earthâs human population is, or confined to a small area, as species of fish in a lake are. Copyright © by Holt, Rinehart and Winston. All rights reserved. 382 CHAPTER 19 If the small patch contains 25 oaks, an area 10 times larger would likely contain 10 times as many oak trees. A similar kind of sampling technique might be used to estimate the size of the pop- ulation shown in Figure 19-2. To use this kind of estimate, the sci- entist must assume that the distribution of individuals in the entire population is the same as that in the sampled group. Estimates of population size are based on many such assumptions, so all esti- mates have the potential for error. Population Density Population density measures how crowded a population is. This measurement is always expressed as the number of individuals per unit of area or volume. For example, the population density of humans in the United States is about 30 people per square kilome- ter. Table 19-1 shows the population sizes and densities of humans in several countries in 2003. These estimates are calculated for the total land area. Some areas of a country may be sparsely popu- lated, while other areas are very densely populated. Dispersion A third population property is dispersion (di-SPUHR-zhuhn). Dispersion is the spatial distribution of individuals within the popu- lation. In a clumped distribution, individuals are clustered together. In a uniform distribution, individuals are separated by a fairly con- sistent distance. In a random distribution, each individualâs location is independent of the locations of other individuals in the popula- tion. Figure 19-3 illustrates the three possible patterns of dispersion. Clumped distributions often occur when resources such as food or living space are clumped. Clumped distributions may also occur because of a speciesâ social behavior, such as when animals gather into herds or flocks. Uniform distributions may result from social behavior in which individuals within the same habitat stay as far away from each other as possible. For example, a bird may locate its nest so as to maximize the distance from the nests of other birds. These migrating wildebeests in East Africa are too numerous and mobile to be counted. Scientists must use sampling methods at several locations to monitor changes in the population size of the animals. FIGURE 19-2 TABLE 19-1 Population Size and Density of Some Countries Population size Population density Country (in millions) (in individuals/km2) China 1,289 135 India 1,069 325 United States 292 30 Russia 146 8 Japan 128 337 Mexico 105 54 Kenya 32 54 Australia 20 3 dispersion from the Latin dis-, meaning âout,â and spargere, meaning âto scatterâ Word Roots and Origins Copyright © by Holt, Rinehart and Winston. All rights reserved. POPULATIONS 383 The social interactions of birds called gannets, which are shown in Figure 19-3b, result in a uniform distribution. Each gannet chooses a small nesting area on the coast and defends it from other gannets. In this way, each gannet tries to maximize its distance from all of its neighbors, which causes a uniform distribution of individuals. Few populations are truly randomly dispersed. Rather, they show degrees of clumping or uniformity. The dispersion pattern of a population sometimes depends on the scale at which the popu- lation is observed. The gannets shown in Figure 19-3b are uni- formly distributed on a scale of a few meters. However, if the entire island on which the gannets live is observed, the distribution appears clumped because the birds live only near the shore. POPULATION DYNAMICS All populations are dynamicâthey change in size and composition over time. To understand these changes, scientists must know more than the populationâs size, density, and dispersion. One important measure is the birth rate, the number of births occur- ring in a period of time. In the United States, for example, there are about 4 million births per year. A second important measure is the death rate, or mortality rate, which is the number of deaths in a