How do sand dunes migrate?
Active dunes travel, or migrate, when wind-eroded sand from their upwind (windward) slope moves by saltation and surface creep over the dune crest and onto the steep leeward (downwind) slope, which is the slip face.
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In general, the higher the trophic level in an ecosystem, the lower the biomass present
Indicate whether the statement is true or false.
Glaciers erode by the processes of ____
a. ablation and abrasion b. plucking and hydraulic action c. deflation and saltation d. plucking and abrasion
Salinization is likely to occur
A) in areas characterized by coniferous forests. B) in the tropics. C) in areas of high potential evapotranspiration. D) in humid climate regions.
Autocatalysts are a special class of catalysts that promote reactions that create more _________.
Fill in the blank(s) with the appropriate word(s).