____________________ is the study of past geographical environments
Fill in the blank(s) with correct word
Paleogeography
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Dinoflagellate cell walls are composed of ________.
A. calcium carbonate B. cellulose C. silica D. a combination of these choices E. None of these choices.
Why did Wegener choose organisms such as Glossopteris and Mesosaurus as evidence for continental drift as opposed to other fossil organisms, such as sharks or jellyfish?
What will be an ideal response?
Most of the national forests in the southern Appalachians were bought by the U.S. government in the 1920s and 1930s after these lands had been seriously degraded by logging companies. The forests have since recovered and in some places not been logged since they were bought. Which forest type is represented by these unlogged areas?
A. second-growth B. old-growth C. tree plantation D. commercial
Which of the following statements about fusion is true?
A) Fusion reactions have no critical-mass requirement. B) Fusion is easier than fission. C) Fusion reactions can be easily controlled to make energy. D) Fusion produces no harmful radiation. E) none of the above