Chemical warfare against the invasive fire ant, during the 1950s and 1960s, actually hastened the advance of this ant by __________________native ant populations
Fill in the blanks with correct word
reducing
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Most precipitation falling on terrestrial ecosystems becomes ____.
A. surface runoff into lakes, streams, and the ocean B. ice in glaciers C. groundwater in aquifers D. storage as part of rocks E. storage in living components of ecosystems
Which of the following processes is most important in sculpting the landscape shown in this photograph from the Investigation?
A. stream erosion B. physical weathering C. stream transport D. glacial erosion
In which of the following regions would we most expect to find industrial smog?
A) In southern Florida in high tourist regions along the beaches B) In a farming region that primarily produces either cotton, soybeans, or corn C) Around an industrial town that burns coal to generate electricity and make steel D) Around a city that primarily relies on nuclear energy and public transportation
Scientists called the new phenomenon, witnessed in May 2009, of straight line, 100 mph winds with an eyelike structure and a path of destruction 100 miles wide a