Life on Earth. 1. Analysis of the oldest sedimentary rocks provides evidence for the origin of life. * Identify the relationship between the conditions on early Earth and the origin of organic molecules. * Scientists estimate that the universe is 10-20 billion years old and arose as a big bang‚ which is still expanding the universe. * The early Earth was very different from the Earth today and no oxygen was present. This means that there was no ozone layer exposing the Earth’s surface
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Atmosphere Homework Describe the composition of the air Air is a mixture of gases and aerosols that compose the atmosphere surrounding Earth. The primary gases of air include nitrogen (78%) and oxygen (21%). Trace gases and aerosols make up the remaining 1% of air. The trace gases include the noble gases argon‚ neon‚ helium‚ krypton and xenon‚ hydrogen and the greenhouse gases. The aerosols are solid or liquid particles having diameters in the region of 0.001 to 10 microns‚ and include dust
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Earth Summit International meetings aiming at drawing up measures for the environmental protection of the world. The first summit took place in Rio de Janeiro‚ Brazil‚ in June 1992. Treaties were made to combat global warming and protect biodiversity (the latter was not signed by the USA). The second Earth Summit was held in New York in June 1997 to review progress. The meeting agreed to work towards a global forest convention with the aim of halting the destruction of tropical and old-growth forests
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The Good Earth The Good Earth depicts a famer’s journey to prosper from his land while undergoing many struggles and hardships. Farmer Wang Lung lives in a civilized village where he and the villagers work and live off the land‚ but when a famine strikes‚ this forces Wang and his family to move towards the city in search of food and money. In the busy city‚ that is very chaotic due to a revolution‚ Wang and his family must rely on begging and stealing instead of relying on the Earth. Throughout
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2011 The Nature of Wang Lung All human beings show emotion‚ as emotions are a tell-tale sign of who somebody is‚ what they are to others‚ and how they react to different situations. When we examine the character Wang Lung from the book The Good Earth‚ we see an example of the purest form of the human nature working under difficult situations. Through this book‚ Wang Lung symbolizes “human nature‚” as he shows a dynamic variety of different human attributes from the beginning to the end‚ such as
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Kristel Mae Tagle Bs BIOLOGY III Planet Earth Earth is the third planet from the sun. The place where many organisms exist‚ enhance with the beauty of nature. Packed with rich biodiversity‚ streams and rivers. Have you seen this place before? Maybe yes‚ but for how long? How much it matter to us if it is lost? What can we do to save them? Those are questions that that will hopefully strike our nerves. In this new millennium‚ many changes have occurred that altered the condition of the nature
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endless life in a tree. Paraphrase of the Poem: [1-9 lines] It takes a lot of time and strength to kill a tree because it grows slowly and rises out of the earth by absorbing years of sunlight air and water. So‚ it is not easy to kill a tree with a single stroke of a knife. [10-19 lines] The tree has deep roots which draws its sap from the earth. It gives rise to tiny twigs and miniature boughs. We hack and chop to kill a tree. But hacking and chopping cannot destroy it completely as green twigs
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In the book The Good Earth by Pearl S. Buck‚ the fall of the House of Hwang and the rise of the Wang family was shown. The story completed a "circle of life"‚ with Wang being the center of the circle. While Wang at first was intimidated‚ he also looked down on the House of Hwang‚ he soon found that when his family became rich‚ his house fell onto some of the same "curses". In both houses‚ a lack of love for the land was highly noticeable (except for Wang Lung)‚ opium was used‚ slaves were
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There are many different layers within the Earth. The core is at center of the Earth. The Earth’s core takes up sixteen percent of Earth’s volume‚ containing thirty-three percent of its Mass ..Pressure rises steadily inside the earth because of the weight of overlying rock. Therefore ‚the Pressure at the outer boundary of the core reaches 1.37 million atmospheres‚ 3.7 million Atmospheres. The core is made mostly of iron and nickel and possibly smaller amounts of lighter elements including sulfur
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crust). The lower mantle runs slowly‚ at a rate of a few centimeters per year. 3. Core: The Earth has an iron-nickel core that is about 2‚100 miles in radius. At the core-mantle boundary‚ composition changes. Seismic waves suggest this material is of a very high density (10-13 g/cm3)‚ which can only correspond to a configuration of metals rather than rock. The presence of a magnetic field around the earth also indicates a molten metallic core. Unlike the crust and the mantle‚ we don’t have any samples
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