Winds at the ____ level help "steer" atmospheric storms
A) 300mb
B) 800mb
C) 700mb
D) 900mb
E) 500mb
E
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The best evidence that the Sun is a newcomer in the universe is
A. the existence of heavy elements in its composition. B. its relatively slow rate of spin. C. its position in the galaxy. D. its very existence in spite of its high burning rate. E. its high temperature as revealed by its color.
Answer the following statement(s) true (T) or false (F)
1. Prior to civil war in 1975 Lebanon was referred to as the "Switzerland of the Middle East". 2. The Sinai peninsula separates the Persian Gulf from the Gulf of Oman. 3. One of the consequences of prolonged conflict between Israelis and Palestinians has been increased political and religious polarization.
Twilight is caused by
A) negative albedo. B) scattering. C) diffuse radiation. D) absorption.
Extinction is ________
A) proceeding more slowly now than at any other time B) something that occurs only rarely C) always caused by human disturbance D) the loss of communities from the planet E) a natural process