1The rapid depletion of freshwater aquifers poses a serious threat to agricultural production in the region.
2Has the depletion of the ozone layer slowed since the implementation of the Montreal Protocol?
3Scientists warn that current consumption rates will not merely reduce fish stocks but lead to their total depletion within decades.
4Consider how the depletion of topsoil affects long-term food security across sub-Saharan Africa.
5There is mounting evidence that sleep deprivation causes a significant depletion of cognitive reserves over time.