Dupage BIOLOGY 1100 – One way to kill weeds growing from cracks

| March 14, 2016

Question
One way to kill weeds growing from cracks in your driveway is to pour salt in the cracks. When people are given IV fluids in the hospital, the IV bag contains a saline solution, not pure water. Use the termshypertonic,hypotonic, and osmosis to explain how salt acts as a weed killer and what would happen to human red blood cells if an IV of pure water was administered.

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