After the USSR collapsed, Russia's population began a steep numeric decline due to __________.
a. high death rates because of alcoholism, heart disease, and the collapse of the social safety net
b. declining birth rates as a result of economic and social crisis
c. a demographic shift whereby Russians moved to other parts of the world
d. all of these are correct
e. declining birth rates as a result of economic and social crisis, and high death rates because of alcoholism, heart disease and the collapse of the social safety net
e. declining birth rates as a result of economic and social crisis, and high death rates because of alcoholism, heart disease and the collapse of the social safety net
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Which of the following amounts is the water vapour pressure that occurs when water vapour comprises 3.5 percent of an air parcel whose total pressure is 100 kPa?
A. 103.5 kPa B. 35 kPa C. 96.5 kPa D. 3.5 kPa
Which compound is least likely to be washed downward from the A horizon?
A) silicate minerals B) organic matter C) potassium crystals D) magnesium minerals
Prevailing winds are the result of what?
a. temperature b. direction the sun strikes the earth c. rotation of the earth on its axis d. ocean currents e. sun storms
El Niño conditions are characterized by ____
a. stronger westerlies over the northern Atlantic Ocean b. monsoon winds over India c. strong upwelling along the western coast of South America d. a warm countercurrent that replaces cold coastal waters e. unusually large Rossby waves over the northern Pacific Ocean