In general the percentage of Muslims in the population of Africa South of the Sahara declines from

A. south to north
B. east to west
C. west to east
D. north to south


D. north to south

Environmental & Atmospheric Sciences

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Define sustainability and sustainable development. What is a sustainable society?

What will be an ideal response?

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Which of the following methods do scientists use to determine air temperature in the thermosphere?

A. use of radiosondes B. observation of changes in satellite orbits C. use of temperature probes in orbiting satellites D. direct measurement in manned, high-altitude balloons

Environmental & Atmospheric Sciences

Straight scratches on rock surfaces created by glacial abrasion are known as:

a. rock flour. b. glacial striations. c. glacial till. d. varves. e. moraines

Environmental & Atmospheric Sciences

In the Earth's atmosphere, only 50% of atmospheric gas lies at elevations below 50 km

a. true b. false

Environmental & Atmospheric Sciences