Earth heats the atmosphere from the bottom up, by absorbing sunlight and converting it to thermal energy and radiating heat
a. True
b. False
Indicate whether the statement is true or false
True
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The concentration of steel production in Pittsburgh was made possible by
A. the abundance of coal in Pennsylvania. B. the abundance of coal in Georgia and Alabama. C. the confluence of the Allegheny and Monongahela Rivers. D. the density of population in the mid-Atlantic states.
Which of the following nationalities did not gain independence after the collapse of the Soviet Union in 1991?
A) Armenian B) Azerbaijani C) Ukrainian D) Georgian E) Turkish
The largest intrusive bodies are called ____________________, and, by definition, they must have at
least ____________________ square kilometers of surface area. Fill in the blank(s) with the appropriate word(s).
The boiling point of liquid nitrogen is 77 K. What is this temperature on the Celsius scale?
A) 350°C B) 171°C C) 25°C D) -196°C