The current ozone hole area is still large compared to the 1980s, when the depletion of the ozone layer above Antarctica was first detected. This is because levels of ozone-depleting substances like chlorine and bromine remain high enough to produce significant ozone loss.
Source: tatoeba (6548038)
Unsustainable fishing on coral reef areas can lead to the depletion of key reef species in many locations.
Source: tatoeba (6684660)
The best refutation of the imaginary Malthusian laws of "land depletion" is the practice of Soviet collective farming.
Source: tatoeba (10903472)
He is keenly aware that the depletion of the Ogallala aquifer could ultimately drive his family off the land.
Source: tatoeba (11133127)
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