Why are buried oil and gas pipelines vulnerable to damage during a flood?
a. The pipes rise with the rising water level, causing the pipes to break.
b. The large amounts of sediment flowing during a flood puts additional pressure on the pipes.
c. Channel scour can erode down to the pipeline level, and tumbling rocks can sever the pipe.
d. When the levee is overtopped, the dropping water level can expose the pipe, leading to damage.
e. If the oil and gas are shut off, the pipe becomes lighter and can float to the bankfull level.
ANSWER: c
You might also like to view...
Vulcanian eruptions are generally far larger and more dangerous than Hawaiian or Strombolian
eruptions. Indicate whether the statement is true or false.
Relying on natural predators to control pests is but one of many nonpesticide options farmers can use in an approach known as biological control.
Answer the following statement true (T) or false (F)
A massive cloud of air pollution largely generated in China affects only China, but causes serious respiratory problems there
Indicate whether the statement is true or false
Over the past 25 years, South Korea has enjoyed three times the economic growth of Pakistan, primarily because of
A) higher rates of school enrollment and literacy and a low total fertility rate. B) greater government investment in technology and infrastructure. C) more sustainable environmental policies. D) greater efforts to combat malaria and other infectious disease.