Describe why there are such massive petroleum deposits in the Persian Gulf region
The accumulation of petroleum in the region is related to the deposition of thick sections of sediment along the passive margin of Africa.
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According to plate tectonic theory, the San Andreas fault is a transform boundary that separates the North American plate from the ________.
A. Australian plate B. Caribbean plate C. Eurasian plate D. Cocos plate E. Pacific plate
About one-third of the toxic metal, mercury (Hg), is released into the air from natural sources, such as rocks, soil, volcanoes, and the ocean. The remaining two-thirds come from human activities such as ____.
A. automobile exhaust B. airplane exhaust C. plastic recycling D. gold mining E. livestock farming
After a mass extinction, the earth's overall biodiversity eventually returns to equal or higher levels.
Answer the following statement true (T) or false (F)
Which of the following is the largest city in the world?
A) Delhi B) Shanghai C) Tokyo D) New York