million (ppm)‚ up from today’s 395 ppm and the preindustrial era’s 280 ppm. Now it appears that the assessment was too optimistic. The latest data from across the globe show that the planet is changing faster than expected. More sea ice around the Arctic Ocean is disappearing than had been forecast. Regions of permafrost across Alaska and Siberia are spewing out more methane‚ the potent greenhouse gas‚ than models had predicted. Ice shelves in West Antarctica are breaking up more quickly than once
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I. WHAT IS GLOBAL WARMING? Global warming is the gradual increase of the Earth’s average measured temperature overtime. This measured average temperature is derived from both the near-surface air as well as ocean waters. Scientists began measuring this temperature beginning in the mid-20th century and have continued to monitor fluctuations and deviations in measurements ever since. The average global temperature increased approximately 1.33°F over the past 100 years ending in 2005. This led the
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Hayword’s leadership and watch several miss-haps have happened. In August 2006‚ BP shut down oil operations in Prudhoe Bay‚ Alaska‚ due to corrosion in pipelines leading up to the Alaska Pipeline. The wells were leaking insulating agent called Arctic pack‚ consisting of crude oil and diesel fuel. BP had spilled over one million litres of oil in Alaska’s North Slope. 5‚000 barrels of oil were released from the pipeline. October 2006. In May 2007‚ the company announced another partial field shutdown
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Who you are Consider living in a village on the Arctic Ocean‚ isolated from civilization with desolate tundra‚ and temperatures dropping at least -65 degrees Fahrenheit. As you look outside‚ everything you see is covered in at least 4 ½ feet of snow. Believe it or not‚ Barrow is home to at least 4‚212 residents. Many of these residents rely on subsistence hunting. So‚ you are probably wondering‚ “What’s a girl like me doing in a place like this? “ It is a fact that the weather is erratic. At times
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terrestrial biomes (land) and aquatic biomes (water). Biome Tundra: Location- Regions south of the ice caps in the Arctic. In North America‚ Northern Europe and Asia. Climate- Short cool summers and long freezing cold winters. High winds. Adaptions- Thick fur to survive during winter and found places to hibernate during winter. Plants- Lichens mosses‚ grasses‚ shrubs. Animals- Artic Fox and Polar bear Special Facts- Plants in Tundra regions tend to be small and stunted due to the year round
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A soil horizon is a layer parallel to the soil surface‚ whose physical characteristics differ from the layers above and beneath. Each soil type has at least one‚ usually three or four horizons. Horizons are defined in most cases by obvious physical features‚ chiefly colour and texture. These may be described both in absolute terms (particle size distribution for texture‚ for instance) and in terms relative to the surrounding material‚ i.e. ‘coarser’ or ‘sandier’ than the horizons above and below
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that Please Reanimate and Do Not Reanimate address is that we can revive species that could possibly help our ecosystems and save modern day species of animals from going extinct; but on the other hand‚ reviving “extinct species poses a risk of selling the public on a false promise that technology alone can solve our ongoing environmental woes.” Reviving certain species could give ecosystems that depend on “keystone species” that have lost the species diversity they once had because some species no
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countries that supply our oil. Hill states‚ that environmentalist are “self-indulgent” with this issue. He feels as if they are not open-minded and ignorant to the fact of the benefits. This next article that I chose is against drilling in the Arctic National Wildlife Refuge (ANWR). Titled: “Drilling ANWR is not the answer to US energy challenges” and is written by Dan Ritzman. The main arguments Ritzman captures is the environment. He claims due to the oil spills that oil industries have covered
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Communities and Ecosystems 5.1.1 Define species‚ habitats‚ populations‚ community‚ ecosystems and ecology. Species: a group of organisms that can interbreed and produce fertile offspring. Habitat: the environment in which a species normally lives or the location of a living organism. Population: a group of organisms of the same species who live in the same area at the same time. Community: a group of populations living and interacting with each other in an area. Ecosystem: a community and
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------------------------------------------------- SBI4UB ------------------------------------------------- Key Questions – Unit 5 Ahmad Moussaoui 57. a) The Canadian population is still growing despite its low birth rate because of a few factors. Canada is a developed country‚ with advances in public sanitation‚ medicine‚ and public health. All of which give Canada a low mortality rate. Immigration also plays a big part in Canada’s population growth‚ as Canada is considered by many to
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