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Dates: during 1980-1989
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...ways. Dredging can stir up the bottom, throwing pollutants back into circulation. The U.S. Navy plans to build a port in Puget Sound for the aircraft carrier U.S.S. Nimitz and twelve other ships; the project will require displacement of more than 1 million cu. yds. of sediment, with unknown ecological consequences. Similarly, natural events such as hurricanes can bestir pollutants from the sediment. The estuarine environment also changes when the balance of freshwater and salt water is disturbed. Upstream dams, for example, diminish the flow of freshwater into estuaries; so do droughts. On the other hand, rainstorms can cause...
...then that the natural growth of sea grass may be ended, as has happened in Chesapeake Bay, or sudden blooms of algae can occur, particularly in stagnant waters. The exact reasons for these spurts of algal growth are unknown. They can be triggered, for example, by extended periods of sunny weather following heavy rains. Scientists believe algal growth is speeded up by the runoff of agricultural fertilizers. The burgeoning algae form a dense layer of vegetation that displaces other plants. As the algae die and decay, they sap enormous amounts of oxygen from the water, asphyxiating fish and other organisms...
...forgotten 1976 campaign for the presidency ended -- and even his last-ditch, favorite-hopes were thoroughly dashed in his home state by Jimmy Carter -- Lloyd Bentsen had still not passed the asterisk level in national name recognition. Twelve years later, at 67, the senior Senator from Texas remains largely unknown outside his home state and Washington. His career has played out in the boardrooms of Houston and the hideaway offices of the Capitol. The backslapping style of a Lyndon Johnson or a John Connally, two of his early supporters, is totally foreign to this patrician son of a wealthy landowner...
...only 6,100 miles, transmitting 22 television pictures of a bleak, moonlike landscape, pockmarked by craters and showing no signs of life. Even so, hope persisted. To demonstrate that a Mariner flyby at a distance of thousands of miles might completely overlook a thriving civilization, a young and still unknown Carl Sagan that same year sifted through a thousand pictures of earth shot by a weather satellite orbiting only 300 miles up. In a paper entitled "Is There Life on Earth?" he reported that only one photograph, of a snow-covered superhighway cutting a straight line through a forest, showed...
...always the case that the records willbe as centralized as you may think," said MichaelB. Rosen, associate general counsel for BostonUniversity, who said he customarily handles tenuredisputes. "It's not unknown that documents show uplast minute. You don't know where to look toguarantee that you discovered them...