Changes in one part of the Earth system can influence processes in other parts of the system. Sometimes these changes can be minor, but sometimes they can be severe. How might a change in the hydrosphere affect the geosphere and the biosphere?
What will be an ideal response?
Answer: A decrease in the amount of precipitation would affect the biosphere through drought and climate change. The geosphere would be affected because there would be less water for weathering and erosion of sediments.
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Where do most of the people who die from air pollution live?
A. Asia B. Europe C. North America D. Africa
Deuterium oxide, D2O, and water, H2O, have the same chemical structure and differ only in that D2O possesses the deuterium isotope of hydrogen, whereas water possesses the protium isotope
Deuterium oxide, also known as "heavy water," is 11 percent heavier than water. Might you expect its boiling temperature also to be about 11 percent greater? Why or why not? A) The mass of the molecules has a far greater influence on the boiling temperature of the substance than does the polarity of the molecules, so D2O boils at a higher temperature. B) Since they have the same chemical structures, there is a similar molecular attraction between the molecules, so their boiling temperatures are similar. C) Since deuterium is radioactive, it breaks down more easily, so it has a lower boiling temperature than water. D) Since boiling temperature is a measure of the speed of a molecule, the heavier molecules move slower and thus have a higher boiling temperature.
The recent rise of the Chinese economy is associated with
A) the adoption of rigid centralized planning. B) the elimination of economic systems. C) the adoption of economic policies widespread in the former Soviet Union. D) a switch to free-market policies.
The ________ is the area where waves break and surf action is greatest
A) berm B) offshore zone C) beach D) backshore zone E) foreshore zone