The earth has sustained life for ____ years.
A. 1.5 million
B. 3.8 million
C. 1.5 billion
D. 3.8 billion
E. 1.5 trillion
Answer: D
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________ are endotherms, and ________ are ectotherms
A) Mammals; birds B) Birds; mammals C) Birds; lizards D) Lizards; mammals
Which measure of humidity, relative humidity or dew point, best describes the actual quantity of water vapor in a mass of air?
What will be an ideal response?
Much of the New World gained independence by 1830. How did the post-independence experience of Brazil differ from the rest of Latin America?
A) The British bought up virtually all the land. B) Cattle destroyed almost all the vegetation. C) The United States invaded and made it a colony until 1898. D) Several universities were started which made it the most educated country in the Americas. E) It did not fragment and remained a single country.
Explain why the surface air on the leeward side of a mountain can be drier than the surface air on the windward side. What is this effect called? Can you think of a location in the United States where this might actually occur??
What will be an ideal response?