The atmosphere is considered because of its ability to transport and distribute materials throughout the globe quickly. a)a superhighway b)a blanket c)stagnant d)a shield

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explanation:

for  example, forests have higher evapotranspiration than other ecosystems,  such  as grasslands, because of their deeper roots and greater leaf area. thus forests have a net moistening effect on the atmosphere and become a moisture source for downwind ecosystems.