—- PLEASE HELP—-
what are some non examples of frontier?

How did a woman’s education differ from a man’s education prior to the mid-19th century? a.women’s schools were unsanitary. b.women’s teachers were inadequate. c.women’s opportunities were unequal. d.women’s schools were more expensive

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.

Iwould appreciate it if someone can answer all the questions