Edmentum. com/courseware-delivery/ua/49145270 /851399868/aHROCHM6Ly9m MSShCHAUZWRtZW50dW0uY29tL2xlYXJUZXW , ☆ e Earth's Subsystems: Tuto
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Earth's Subsystems: Tutorial
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How could the interaction between the stove, the water, and the air be used to model the movement of
energy between Earth's subsystems?
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15. which of the following is not human-caused groundwater pollution? a. water in an aquifer dissolves elements such as arsenic and mercury from surrounding rock. b. water in an aquifer is contaminated by leachate that seeps into the ground from a landfill. c. water in an aquifer becomes polluted with chemicals used in hydraulic fracturing, or fracking. d. water in an aquifer absorbs harmful bacteria from the drainage field of a septic tank.

Consider a culture medium on which only gram-positive organisms such as staphylococcus aureus colonies can grow due to an elevated nacl level. a yellow halo surrounds the growth, indicating the bacterium fermented a sugar in the medium, decreasing the ph as a result and changing the color of a ph indicator chemical. this type of medium would be referred to as a differential and enrichment culture.

Which of the four hypothetical substances you investigated would be most harmful to living organisms? 50 points!