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Part Of The Body Encyclopaedia Britannica
1,248 wordsCanada, federated country of North America, bounded on the north by the Arctic Ocean; on the Northeast by Baffin Bay and Davis Strait, which separate it from Greenland; on the east by the Atlantic Ocean; on the south by the United States; and on the west by the Pacific Ocean and Alaska. Canada is the world's second largest country, surpassed in size only by Russia. Canada has a total area of 9, 970, 610 sq. km (3, 849, 652 sq. mi), of which 755, 180 sq. km (291, 575 sq. mi) is covered by bodies ...
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Polygamous Spawning Fathering 'female Mimicry ' Whereby Males Salmon
1,898 wordsWhat species would travel over 2000 miles just to have young and then die? It has been said that anyone who has not seen a wild salmon has not seen what a fish should be. Salmon was the common name applied to fish characterized by an elongated body covered with small, rounded scales and a fleshy fin between the dorsal fin and tail. In this paper I will be discussing history of studying salmon, the life cycle, spawning and mating behaviors; which has much to do with the total reproduction of salm...
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Spawning Grounds Moving Water Hydropower
397 wordsRenewable Energy (Hydropower) The first time hydropower was used was in 1880 to generate 16 lamps at a wolverine chair factory in Grand Rapids Michigan. In the United States, hydroelectric plants opened near Appleton, Wisconsin on the Fox River on September 30, 1882. At that time, the only fuel used to make electricity was coal because of its abundance and low cost. People knew about hydroelectric power but the only places you could do that is by a water source. Hydropower became more popular wh...
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Commercial Fishing Million Pounds
616 wordsEnvironmental Chinook Salmon Chinook Salmon Environmental Science Wednesday, February 26, 1997 Among the many kinds of fish harvested each year by commercial fisheries is the Oncorhynchus tshawytscha or Chinook salmon. The United States catches an averages of about three hundred million pounds of salmon each year. However some Chinook salmon have been recently listed as threatened. Man has been the main cause for the decline in Chinook salmon populations. The populations of Chinook salmon have d...
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Males And Females Coral Reef
1,136 wordsAs a by standee over viewing the preparation and or the act of courtship in the coral reef fishes, one may think they have taken leave of their senses. The bicolor damselfish tends to quiver while performing a headstand. Blue pullers engage in a series of high-speed jumps. Lyretailfish swim in jerky zigzag patters. Frill fish goby undulates frantically against the sand. The Sergeant major rubs its body hard against the side of a rock or coral cavity and nips at these surfaces. (P 92) These are m...
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Exxon Valdez Oil Spill
822 wordsThe Exxon Valdez is an American oil tanker that went aground on a reef in Prince William Sound, Alaska, on the night of March 24, 1989. The nine hundred and eighty seven-foot tanker ran aground on a reef and started to leak oil. The leakage continued for two days, totaling eleven million gallons the largest oil spill in U. S. history. The tankers remaining 1 million barrels of oil were removed from the hold of the damaged vessel and transferred to other tankers operated by the Exxon Company. The...
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2 5 Million Columbia River
2,056 wordsThe 1, 000 plus species of Salmon and Steelhead that live off the western coast of the United States and breed in the rivers and tributaries of California, Washington, and Oregon have greatly fallen in population. 106 species have become extinct and 314 more are at risk of extinction in the Columbia River Basin, the focus of this report. The causes of this are dams on the rivers stopping salmon from breeding and smolt from returning to the ocean, and commercial fishing boats depleting mature pop...
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N Pag Million Cubic
2,007 wordsThe earliest remains Hydrology Introduction The earliest remains of dams that archaeologists have unearthed date back to around 5000 A. D. They were constructed as part of a domestic water supply system for the ancient town of Jawa in Jordan. Over the next few millennia, the building of dams for water retention spread throughout the Mediterranean, the Middle East, Southern Asia, China, and Central America. Later, as technologies increased and industrialization took hold in Europe, dam mechanisms...
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