The troposphere is composed of 99%
A. hydrogen and oxygen.
B. nitrogen and oxygen.
C. hydrogen and methane.
D. carbon dioxide and nitrogen.
E. helium and hydrogen.
Answer: B
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Why is plutonic a synonym of intrusive?
A) They mean the same thing. B) Plutonic comes from the Greek god of the underworld; intrusive rocks are formed beneath the surface of the Earth. C) Plutonic comes from the Roman god of the ocean; intrusive rocks are formed in water. D) Plutonic comes from the Roman god of fire; intrusive rocks form from lava on the earth's surface.
The U.S. imports over 50% of its petroleum, mostly from what country?
a. Saudi Arabia b. China c. Brazil d. Canada e. India
The Java Sea separates ________ from ________
A) Java island; Borneo Island B) Sunda Islands; Australia C) Vietnam; Philippines D) Singapore; Sumatara Island
Weather deals in days, while climate deals in decades, centuries, and even millennia
Indicate whether the statement is true or false