| How Do Plants Survive Toxic Waste ?
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Darwin’s theory says that only those living beings who are strong and can defend themselves can survive. Hence, some plants can survive in toxic environments also. They even scavenge the pollutants and make the surroundings clean. They scavenge all the pollutants made by man. Those are both inorganic like petrochemicals, and organic like heavy metals. |
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The release of toxins can be due to industrial negligence or may be due to unforeseen circumstances like that of Chernobyl.
In most western countries, there has been an increased alert regarding pollutants and toxins since 1970. As a result, many restrictions are imposed on emissions of pollutants and also to clean up already polluted sites. The reduction of pollutants is particularly termed as remediation. For it, specific plants are grown, which can live with those pollutants. This is a very special phenomenon which can happen with a very few plants which is due to special characteristics.
These plants help the microorganisms which demolish the pollutants. These plants can arrest those pollutants and make them defunct. This is called phyto-stabilization. Some times, the pollutants are consumed by the plants. Organic contaminants of the soil are also absorbed by the roots and released into the atmosphere through leaves. Some plants metabolize the pollutants within their tissue.
The pollutants contained in the water table beneath the soil are sucked by the trees like poplar and cottonweed which absorb great quantity of water everyday. A poplar tree sucks 30 gallons of water whereas cottonweed sucks 350 gallons of water. Since these toxic wastes are taken in with large quantities of water, the amount is basically negligible.
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How Do Plants Survive Toxic Waste
