Infant mortality rates are lowest in which of the following areas?
A) Western Europe
B) Africa
C) Asia
D) South America
Answer: A
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Acid precipitation is especially disruptive when it occurs in areas with ________ because of the lack of ________.
A. Limestone in the soil; buffering capacity B. Crystalline bedrock; buffering capacity C. Alkaline soils; acid resistant mosses D. Alkaline soils; buffering capacity E. Crystalline bedrock; acid resistant mosses
Some magmatic volatiles are among the strongest natural acids known. Indicate whether the statement is true or false
Obsidian is an igenous rock with a glassy appearance and minimal crystal growth. What accounts for this?
A) Obsidian is an intrusive igneous rock that cooled slowly beneath the Earth's surface, result in little crystal growth. B) Obsidian is an extrusive igneous rock that cooled slowly on the Earth surface, resulting in little crystal growth. C) Obsidian is an extrusive igneous rock that cooled very slowly on the Earth surface, resulting in little crystal growth. D) Obsidian is an intrusive igneous rock that cooled rapidly beneath the Earth's surface, result in little crystal growth.
The polarregions may also be classified as low-latitude regions
a. True b. False Indicate whether the statement is true or false