It's a problem made worse by increasing heat waves and droughts due to climate change and alterations in land use which create more sources of dust.

由于气候变化和土地利用的改变产生了更多的灰尘来源，导致热浪和干旱的增加，这一问题变得更加严重。

The authorities often blame a banned separatist group, the indigenous people of Biafra, for an increasing wave of deadly violence targeting security forces, local politicians and civilians in their region.

当局经常指责由比夫拉的土著居民组成的被禁止的分离主义组织，因为他们所在地区针对安全部队、当地政客和平民的致命暴力罪行不断增加。