Which of the following weeds has been found useful to check water pollution caused by industrial effluents? (1) Partheniurn (2) Elephant grass (3) Water hyacinth (4) Both (1) and (2)

Which of the following weeds has been found useful to check water pollution caused by industrial effluents? (1) Partheniurn (2) Elephant grass (3) Water hyacinth (4) Both (1) and (2)
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(4) Both (1) and (2) Explanation: Parthenium and Elephant grass are useful to check water pollution caused by industrial effluents.
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Last Answer : here >>> http://www.czporadna.cz/?qa=20572/jak-odstranit-travu-prorustajici-mezi-schody&show=20576#a20576 ☢ ☠ ☣ ☠ ☣ ☠ ☣ ☠ ☢

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