QUESTION 5 Which method is used to protect the permafrost from the Alaskan Pipel

Question

QUESTION 5 Which method is used to protect the permafrost from the Alaskan Pipeline? O a chilling the outside of the pipe O b.setting the pipe on coarse gravel o e chiling the contents Od pre-thawing the pemafrost o e elevating pipe above permafrost QUESTION6 Alternating strips of com and alfalfa is a good example of o a.strip cropping O b. terraoing O c orop rotation Oe contour plowing QUESTION 7 Which of the following components of a typical soll s most abundant? o a mineral matter O b.water o e all are equa d gases e organie maer QUESTION A hard, white, crusty caloium carbonate deposit within the 8 horizon in the arid desert regions of the American Southwest is calied which of the following? O a caliche O b.loess QUESTION Matoh the soil contaminant to the method used to remove t sewage oil, food waste solvents. gasoline, and other evaporates salits and heavy metais A phytoremediation B bioramediation C vapor extraction

Explanation / Answer

Q.5. Elevating pipe above permafrost is best suitable method to protect the permafrost from the Alaskan pipeline. Q. 6. Alternating strips of corn and alfalfa is good example of strips cropping. Q. 7. Mineral matter (a typical soil contains 45 percentage mineral matter and 5 % organic matter and remaining 25 % each have gas and water. Q. 8. Calichie (mineral deposit: it is hard sedimentary rock which contains calcium carbonate with gravel, sand silt and clay. It is mostly found in Southwest america in dry areas). Q. 9. Sewage, oil, food waste: bioremediation; solvents, gasoline and other evaporates: vapor extraction; salts and heavy metals: photoremediation

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