The Study of Uniformitarianism The origin of life on Earth is a fundamental scientific question‚ but we do not know as much as many biology textbooks would like you to believe. (Pigliucci) Uniformitarianism is vital to the world of science. It is a geological doctrine. It states that the same natural laws and processes that operate in the universe now‚ have always operated in the universe in the past and apply everywhere in the universe. It assumes that geological processes have essentially not
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2 Challenges for the Planet The causes‚ effects and responses to climate change Learning objective – to study the causes and effects of climate change and how people have responded to the changes. Learning outcomes • To know how and why climate has changed since the last ice age. • To be able to discuss the causes of current climate change on a local and global scale. • To know the negative effects that climate change is having on the environment and people. • To be able to
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Hydrosphere The movement of water around‚ over‚ and through the Earth is called the water cycle‚ a key process of the hydrosphere. In physical geography‚ the term hydrosphere (Greek hydro means "water") describes the collective mass of water found on‚ under‚ and over a planet’s surface. The Earth’s hydrosphere consists chiefly of the oceans‚ but technically includes clouds‚ inland seas‚ lakes‚ rivers‚ and underground waters. Hydrosphere refers to that portion of Earth that is composed of water. The
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The Great Journey “I wanted movement and not a calm course of existence‚ I wanted excitement and danger and the chance to sacrifice myself for my love‚ I felt myself in a superabundance of energy which found no outlet in our quiet life” –Leo Tolstoy. Leo Tolstoy’s views and ideas‚ along with other philosophers‚ would determine the internal drive and the overall decisions of an individual named Chris McCandless. The book Into the Wild‚ by Jon Krakauer‚ is the story of a man named Chris McCandless
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emissions; water pollution from raw sewage; deforestation; smoke/haze from Indonesian forest fires Definition: This entry lists the most pressing and important environmental problems. The following terms and abbreviations are used throughout the entry: Acidification - the lowering of soil and water pH due to acid precipitation and deposition usually through precipitation; this process disrupts ecosystem nutrient flows and may kill freshwater fish and plants dependent on more neutral or alkaline
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nations alike. Apart from that‚ deforestation also play a major role in global warming as forested lands are typically cleared and burned for farming. The sea levels have as a result of the associated thermal expansion of ocean waters and melting of glaciers‚ shown to rise at a rate of 1.8 millimeters per year in the past century. A rise in sea levels will have serious implications on coastal environments or small islands from the perspectives of both natural ecosystems and human populations as a large
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Lesson II – Effects of Deforestation Deforestation is the removal or destruction of large areas of forest or rainforest. Deforestation happens for many reasons‚ such as logging‚ agriculture‚ natural disasters‚ urbanization and mining. There are several ways to clear forest -- burning and clear-cutting the land are two methods. Although deforestation occurs worldwide‚ it’s a particularly critical issue in the Amazon rainforests of Brazil. There‚ the tropical forests‚ and the species of plants and
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as carbon sink Benefits not felt for at least 10 years Energy Efficient Most effective way Remodel factories – optimum use of energy Greener power stations Recycling Green transport – hybrid technology Rising temps More droughts Melting glaciers Water stress experienced by 40% of population Applied at all scales Allow developed countries to pay for greenhouse gas by cutting projects in return for carbon credits World Conference on Disaster Reduction Hyogo Framework Solutions
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Global warming is it is the increase in the earth’s average temperature due to the release of several greenhouse gases into the atmosphere by humans. Global warming is affecting many different parts of the world and in turn causes a cause and effect. Glaciers are melting which is causing the sea level to rise. When the sea level rises it causes damage to people living in low lying areas‚ and damages to plants by covering them which causes them to die. Which in turn causes animals to lose their main source
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MEN BEHIND SCIENTIFIC INVESTIGATION & DISCOVERIES I- Introduction “He had in fact most of the qualities that make a great scientist: an innate curiosity and perceptiveness regarding natural phenomena‚ insight into the heart of a problem‚ technical ingenuity‚ persistence in seeing a job through and that physical and mental toughness that is essential to the top-class investigator.” - Leonard Colebrook (1883 - 1967) Scientists are known by their discoveries‚ inventories‚ theories discovered
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