The existance of slavery in the us is a good example of how a. american values are not always reflected in practice b. americans have never valued liberty c. european ideals have influenced american political culture d, political needs are often placed above economic needs

Which suggests the most critical aspect of the peak oil theory? 1) controversy rages over rumors that the fracking lobby in washington has influenced the statistics. 2) supporters and critics argue endlessly over the rate of extraction and shape of the bell curve. 3) saudi arabia will soon have to begin fracking, leading to protests and further destabilization. 4) a new oil discovery means a fresh peak cycle, making that region the target of aggressors.