1 A) it is used at a faster rate than it is being replaced B) it is replaced faster than it is used or at the same rate as it is being used C) it is never replaced D) it is being used faster than it was formed 2 A) water B) copper C) air D) trees 3 A) batholiths B) glacial deposits C) volcanic deposits D) xenoliths 4 A) chemical precipitation in layers of sedimentary rocks B) hydrothermal fluid migration C) settling of crystals in igneous rocks D) placer deposits 5 A) hydrothermal ores B) renewable resources C) land resources D) depleted resources 6 <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0078746361/561695/197_wateruse_ls_251c.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (29.0K)</a>]]> A) irrigation B) public supply C) electricity D) industry 7 A) photosynthesis B) respiration C) digestion D) transpiration 8 A) gold B) silver C) copper D) magnesium 9 A) burning fossil fuels B) deforestation C) respiration D) photosynthesis 10 A) nitrogen and water B) oxygen and methane C) carbon dioxide and water D) hydrogen and oxygen 11 A) nitrogen B) oxygen C) carbon dioxide D) hydrogen 12 A) Marine animals use carbonate and bicarbonate ions in their shells B) Carbon dioxide in the atmosphere is used by animals in photosynthesis C) Carbon is stored in the solid earth as coal, petroleum, or graphite D) Limestone can dissolve in acidic rain, releasing carbon dioxide into the air or water 13 A) soil, air, plant, air, animals, soil B) soil, animals, plants, air soil C) air, animals, soil, plants, air D) air, soil, plants, animals, soil, air 14 2 most abundant?A) oceans B) fossil fuels C) organic wastes D) carbohydrates 15 A) they fix free nitrogen B) they break sown wastes C) they release nitrogen compounds in plants D) they release fixed nitrogen into the soil
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