About how many people die each year because of indoor and outdoor air pollution worldwide?
A. 10,000
B. 70,000
C. 500,000
D. 1 million
E. 7 million
Answer: E
Environmental & Atmospheric Sciences
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According to Demographia, how many cities in the world today have a population of at least 20 million?
A) 4 B) 8 C) 10 D) 15 E) 20
Environmental & Atmospheric Sciences
One suggested cause of deep focus earthquakes is ________.
A. collapse of minerals into denser forms B. the rise of core material into the mantle C. friction between the core and the mantle D. collision of convection currents E. collapse of pore space in sedimentary rocks
Environmental & Atmospheric Sciences
On the standard pH scale, the number 10 indicates a ________ soil
A) acid B) neutral C) basic (or alkaline) D) fine-textured E) porous
Environmental & Atmospheric Sciences
Referring to the figure above, which transfer of heat is being represented?
A. radiation B. conduction C. convection D. scattering
Environmental & Atmospheric Sciences