By approximately what year was Australia settled by Aborigines?
A) by 400 CE
B) by 2500 BCE
C) by 1200 CE
D) by 200 BCE
E) by 1200 BCE
B) by 2500 BCE
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List three variations in buffering.
What will be an ideal response?
Much of the catastrophic damage done by Hurricane Katrina was caused by a storm surge arriving near high tide
a. True b. False
Give a brief overview of the carbon cycle. Include the source of carbon that enters ecosystems, how it moves through ecosystems, what it is used for, and where it is ultimately deposited
What part of this cycle is believed to contribute to global warming?
Bacteria and fungal spores are potential ________
A) the cause of high pesticide use in the home B) VOCs and POPs C) sources of radon in the home D) problems in degrading the ozone layer E) causes of "sick-building syndrome"