Word: deposits
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Dates: during 1940-1949
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...oldest of the fashionable farming theories, says Dr. Kellogg, teaches that "the soil is like a bank"; the farmer must deposit (in fertilizer) as much as he takes out (in crops), or eventually overdraw his account. This is true only in certain cases, says Dr. Kellogg. Many soils can be cropped indefinitely without loss of fertility. The chemical elements taken away by crops are restored by silt, dust and volcanic ash. Other chemicals work their way up from below. Dr. Kellogg does not believe that fertilizers are unnecessary, but he thinks that farmers who follow the "bank" theory often waste...
...female follows him to the nest and swims in. He pokes her with his nose. This is a "tactile releaser," which persuades her to deposit her eggs. Then a "chemical releaser," given off by the fresh eggs, goes into action. Attracted by it, the male swims into the nest triumphantly and fertilizes the eggs...
...Atomic Energy Commission offered a bonus of $10,000 to anybody who could find a new U.S. deposit of high-grade uranium ore-payable upon the delivery of 20 short tons...
...squints through a microscope that Dayton's rain got its color from algae (microscopic plants) sucked up by a tornado. Full-sized tornadoes can lift heavy objects (such as signboards) high into the clouds. Even little whirlwinds can vacuum-clean the surface of a pond and deposit its green scum many miles away as discolored rain. Sometimes small fish or frogs are sucked up (and later dropped) with the water...
...rodlike detector close to the ground and listening to the sounds in his earphones: rhythmic clicks, five to 50 a minute, depending on the minerals under foot. As he walked, the clicking sped up, whirred into a roar. The man stopped, noted down the location. He had detected a deposit of the world's most coveted mineral: uranium ore, chief source of atomic energy...