NURSING EXAM QUESTIONS
TOXICOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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water flows through soil, landfills, or other areas dissolving materials and carrying it with the water to lower levels
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Acid rain is formed when water flows through a coal mine
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The use of drip irrigation
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A friend constantly borrows money but never pays it back
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Detailed explanation-1: -Soil leaching is the downward movement of dissolved mobile plant nutrients in the soil profile following percolating water such as rain or irrigation water. Leaching occurs when the soil pores become filled with water and water moves downward in the soil.
Detailed explanation-2: -Currently, leaching primarily describes the process of water carrying soluble substances or small particles through soil or rock. Although this process seems trivial, leaching is one of the key processes of the Critical Zone, controlling the rate and direction in which compounds move.
Detailed explanation-3: -Most leaching comes from infiltration of water, a washing effect much like that described for the leaching process of biological substances. The leaching is typically described by solute transport models, such as Darcy’s Law, mass flow expressions, and diffusion-dispersion understandings.
Detailed explanation-4: -Leaching is the process by which constituents of a solid material are released into a contacting water phase.