Reuters reported Yvo de Boer as saying on Wednesday that although people in dry areas were putting serious stress on the environment through over-grazing, water demand, deforestation and other activities, climate change was the greater threat.
"Climate change will change weather patterns even more … especially in Africa, rainfall is decreasing and climate change is exacerbating desertification. Climate change is probably the biggest factor," Reuters quoted de Boer as saying.
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