Extracting Oil from the Alberta Tar Sands Is a Very

Multiple Choice

Extracting oil from the Alberta tar sands is a very difficult technical process.What is a consequence of this reality?

A) Tar sands oil extraction is being halted in favour of normal oil extraction.
B) Tar sand oil-extracting companies are working on new and easier extraction methods.
C) Tar sands oil generates twice the greenhouse gas emissions of normal oil extraction.
D) Tar sands oil generates three times the greenhouse gas emissions of normal oil extraction.