Which of the following statements about fracking is false?
a. Between 10% and 40% of the fracking fluid pumped down a well returns to the surface as
toxic fracking flowback wastewater.
b. After a 3-year study, the EPA reported there was no evidence of the presence of toxic
chemicals associated with fracking in contaminated well water in Pavillion, Wyoming.
c. Discharging of fracking flowback waste through wastewater treatment plants has caused
corrosion of downstream utility company’s equipment in Pennsylvania.
d. The fracking flowback wastewater includes chemicals that are carcinogenic, neurotoxic
and radioactive.
e. Contamination of groundwater supplies by fracking flowback wastewater leaking through
a cracked pond liner is a very real possibility.
B
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Tar sand is a type of sandstone in which viscous, asphalt-like hydrocarbons fill the pore spaces
Indicate whether the statement is true or false
Warm air is lifted over cold air
What will be an ideal response?
What are the three major layers of Earth from its center to its exterior?
a. core (an iron-nickel alloy), mantle (which is composed mainly of peridotite), and crust (with a granitic or basaltic composition) b. core (which is composed mainly of peridotite), mantle (with a granitic or basaltic composition), and crust (an iron-nickel alloy) c. crust (with a granitic or basaltic composition), mantle (which is composed mainly of peridotite), and core (an iron-nickel alloy) d. crust (an iron-nickel alloy), mantle (which is composed mainly of peridotite), and core (with a granitic or basaltic composition) e. mantle (an iron-nickel alloy), core (which is composed mainly of peridotite), and crust (with a granitic or basaltic composition) a. core (an iron-nickel alloy), mantle (which is composed mainly of peridotite), and crust (with a granitic or basaltic composition)
Consider the accompanying figure and then explain how the movement of the continents can help explain why some species have the geographic distribution that is observed today.
What will be an ideal response?