The Earth's atmosphere is mostly composed of ________
A) nitrogen and carbon dioxide
B) oxygen and carbon dioxide
C) water and oxygen
D) water and carbon dioxide
E) nitrogen and oxygen
Answer: E
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Clays which change to a near-liquid state as a result of sudden disturbance are _______ clays.
a - scree b - mudflow c - talus d - quick e - none of the above
What other countries and regions of the world that you've read about in this book are magnets for refugees, and what sort of amnesty policies do they have?
What will be an ideal response?
Carbon dioxide currently has a concentration of ________ in the homosphere
A) 580 ppm B) 270 ppm C) 400 ppm D) 315 ppm
El Niño is a time of ____
a. warmer than normal ocean water in the Pacific Ocean west of South America b. colder than normal ocean water in the Pacific Ocean west of South America c. strong upwelling off the west coast of South America d. abnormally fast ocean currents worldwide e. stronger than normal currents carrying warm water towards Western Europe