In the Cambrian, the major event for the North American continent was
A. Shallow Sea Transgression and Regression
B. Eastern and Western Orogenic Activity
C. Volcanic Activity
D. Emplacement of plutons along the southern margin
Answer: A. Shallow Sea Transgression and Regression
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All of the following statements about coral reefs are true, except
A) they grow to just below the ocean surface. B) they require warm water. C) their composition is independent of water temperature. D) their shells are composed primarily of calcium.
Most of Earth’s freshwater is located within glaciers.
Indicate whether the statement is true or false.
Asteroids are distinguished from meteorites by their composition.
Answer the following statement true (T) or false (F)
Changes in water density in the oceans create ________.
A. the sofar channel B. light refraction C. sound shadows D. All of these are correct. E. None of these is correct.