Which of the following best explains the global distribution of plant species, such as the Glossopteris, during the Mesozoic?
A) Seeds were small, so they could be carried by the wind.
B) Seeds were ingested by animals and later deposited in scat.
C) The landmasses were joined and the plant had a large geographic extent.
D) Oceans that transgressed on the continents carried the seeds to different locations.
Answer: C
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Long, parallel ridges of sand aligned perpendicular to the wind direction are:a
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In carrying out the policy cycle, which of the following groups would probably use intensive media campaigns or even stage a protest?
A. Public interest groups B. Wealthy or powerful individuals C. Industry associations D. Labor unions E. All of these would want as much publicity as possible
San Francisco, California and Baltimore, Maryland are located at approximately the same latitude. Why does Baltimore experience more rainfall totals in the summer months than San Francisco?