How can historical records be used to analyze past climates?
What will be an ideal response?
Answer: Historical records can record dates of crop harvests, droughts, floods, and other extreme weather events that could affect the population.
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The rain shadow effect is
A. unrelated to uplift. B. created by external processes but affects internal processes. C. created by internal processes but affects external processes. D. more important over the ocean than over land areas.
The Russian taiga or boreal forest is the largest forest on earth, and acts as a major carbon dioxide sink that helps absorb anthropogenic greenhouse gases. The removal of the Russian taiga would contribute significantly to global warming
Indicate whether the statement is true or false
Which requires more work: lifting a 25-kg sack vertically 4 m, or lifting a 50-kg sack vertically 2 m?
A. Lifting the 25-kg sack. B. Lifting the 50-kg sack. C. both require the same amount of work. D. none of the above
Which water molecule has the longest residence time?
A) a molecule in a river B) a molecule in snow C) a molecule in the atmosphere D) a molecule in the ocean E) All water molecules have equal residence times.