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Social Sciences 8 Online
OpenStudy (anonymous):

23. (1 point) The air component in soil provides plants with the needed for photosynthesis. 24. (1 point) The upper limit of the zone of saturation is called the . 25. (1 point) Groundwater can be caused by leaking septic systems, leaking landfills, and agricultural chemicals.

OpenStudy (anonymous):

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