
In the text, ‘contradictory estimates of oil reserve data available in the public domain.’ (lines 38-39) refers to the fact that

In the text, ‘contradictory estimates of oil reserve data available in the public domain.’ (lines 38-39) refers to the fact that

In paragraph 7 (lines 40-50), Sir David King’s main comment is that

“This challenge” in “This challenge will have a longer term effect on our economies...” (lines 43-44) refers to the

In “...additional demand for oil could be met by nonconventional methods,” (lines 52-53) the verb form could expresses

According to the text, extracting oil from the Canadian tar sands