A population pyramid for a developing country would be narrower at the bottom than in the middle, indicating that there are fewer children than middle-aged people.
a. true
b. false
b. false
Environmental & Atmospheric Sciences
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Rainwater causes chemical weathering by
A. removing rock's surface layer. B. applying a force to rock. C. adding water molecules to rock. D. taking minerals out of rock and putting them in solution.
Environmental & Atmospheric Sciences
All dunes have crests oriented perpendicular to the direction of wind movement
Indicate whether the statement is true or false
Environmental & Atmospheric Sciences
June 21 is an equinox date
Indicate whether the statement is true or false
Environmental & Atmospheric Sciences
Non-conventional oil sources include all of the following except
A. tar sands. B. biofuels. C. coal. D. liquified natural gas.
Environmental & Atmospheric Sciences