The second agricultural revolution brought technological innovations to developed regions, which
A.
freed people to leave rural areas and pursue non-agricultural careers.
B.
opened up more land to agricultural productivity, creating a rush to farm marginal lands.
C.
drove fears that genetically modified organisms would negatively affect human health.
D.
spread to developing nations and virtually eliminated subsistence farming.
E.
curbed soil depletion and desertification with new irrigation methods.