salt is sometimes used to kill weeds. Why do you suppose this works?

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salt is sometimes used to kill weeds. Why do you suppose this works?

2007-12-13 08:34:12 · 3 answers · asked by claire k 2 in Science & Mathematics ➔ Biology

3 answers

Salt makes the surroundings hypertonic for the plants' cells. More water diffuses out of the cells than the amount of water that diffuses into the cells. The interior of the cells loses too much water causing plasmolysis and the cells cannot function.

2007-12-13 08:37:23 · answer #1 · answered by ecolink 7 · 1⤊ 0⤋

Because only specific plants can grow in Salty water.

2007-12-13 16:37:41 · answer #2 · answered by rutgersgroup 4 · 0⤊ 1⤋

it dries them out.

2007-12-13 16:37:21 · answer #3 · answered by ? 2 · 0⤊ 1⤋