Trenches are often the originators of large earthquakes and tsunamis. Indicate whether the statement is true or false
ANS: T
Trenches and island arcs are among the most geologically active formations on Earth. These are
associated with subduction zones which are very active. Information can be found in the section The
Topography of Deep-Ocean Basins Differs from That of the Continental Margins.
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How is the ocean a reservoir for carbon? How is the carbon dioxide able to re-enter oceanic and
atmospheric cycles? What will be an ideal response?
Precise measurements of evapotranspiration are difficult
Indicate whether the statement is true or false
Much of the New World gained independence by 1830. How did the post-independence experience of Brazil differ from the rest of Latin America?
A) The British bought up virtually all the land. B) Cattle destroyed almost all the vegetation. C) The United States invaded and made it a colony until 1898. D) Several universities were started which made it the most educated country in the Americas. E) It did not fragment and remained a single country.
Energy flow in an ecosystem is ________
A) bi-directional B) cyclic C) semi-conservative D) top down E) unidirectional