1.) Hydraulic fracturing is a way of releasing petroleum through fractures, or cracks, in the rocks.
2.) Ground water can be contaminated in the process. It is very hard to control fracking and sometimes there is an oil leak.
Wednesday, January 30, 2013
Wednesday, January 9, 2013
Seawall Definition
A seawall is a man made structure made of stone or concrete. It blocks water from getting up into towns and destroying houses.
A problem with seawalls is that the sand will erode away and the seawall will have to be extended farther down into the ground.
Source: "sea wall - definition of sea wall by the Free Online Dictionary, Thesaurus and Encyclopedia.." Dictionary, Encyclopedia and Thesaurus - The Free Dictionary. N.p., n.d. Web. 9 Jan. 2013. <http://www.thefreedictionary.com/sea+wall>.
A problem with seawalls is that the sand will erode away and the seawall will have to be extended farther down into the ground.
Source: "sea wall - definition of sea wall by the Free Online Dictionary, Thesaurus and Encyclopedia.." Dictionary, Encyclopedia and Thesaurus - The Free Dictionary. N.p., n.d. Web. 9 Jan. 2013. <http://www.thefreedictionary.com/sea+wall>.
Thursday, January 3, 2013
Soil Conservation
No-till farming is a system for planting crops without plowing. You use herbicides to control weeds, which results in less soil erosion and more nutrients are preserved. When plants die they are left in the soil to provide nutrients to new plants.
Source- "No-till farming - Wikipedia, the free encyclopedia." Wikipedia, the free encyclopedia. N.p., n.d. Web. 3 Jan. 2013. <http://en.wikipedia.org/wiki/No-till_farming>.
Source- "No-till farming - Wikipedia, the free encyclopedia." Wikipedia, the free encyclopedia. N.p., n.d. Web. 3 Jan. 2013. <http://en.wikipedia.org/wiki/No-till_farming>.
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