The Pacific has a thinner layer of pelagic sediments than the Atlantic due to fewer rivers and an
increase in trenches. Indicate whether the statement is true or false.
ANS: T
The Atlantic has a thicker layer of pelagic sediments than the Pacific for a couple of reasons. First,
there are more rivers that feed sediment into the ocean. Also, the Atlantic has a smaller area than the
Pacific. The Pacific has more topography and trenches for sediments to become trapped in. The
topography allows less sediment to reach deep pelagic depths. Information can be found in the section
Pelagic Sediments Vary in Composition and Thickness.
You might also like to view...
Which of these high-quality energy sources drives the majority of chemical cycling that takes place in natural ecosystems?
A. solar B. geothermal C. nuclear D. fossil fuels
Migrating creatures are aided in migration by
A. directional microbes in their brains. B. magnetic field sensitivity. C. both magnetic and electric field sensitivity. D. none of the above
The product of the breakdown of surface rocks by weathering and erosion is ________.
A. quartz B. magma C. sediment D. lava E. ash
Which of the following is NOT a way to reduce our need for newly mined phosphate? Group of answer choices
a. flush used phosphorous fertilizer into waterways so that it does not inhibit the effectiveness of newly applied phosphorous b. encourage organic farming methods c. reduce soil erosion from agricultural lands so that more phosphorous is retained in the fields for crops d. use phosphorous to grow food crops rather than biofuels crops e. recycle phosphorous-rich animal waste and bones for use in fertilizer