An increasing proportion of female elephants in Mozambique's Gorongosa National Park have been born without tusks. Scientists say it's an evolutionary response to the brutal killing of elephants for their ivory tusks during the country's 15-year civil war.
An elephant's tusks are among its defining features -- they help the animal lift heavy branches, topple trees, strip bark, fight, and dig holes for water and minerals.
But an increasing proportion of female elephants in Mozambique's Gorongosa National Park have been born without these crucial tools, and scientists say it's an evolutionary response to the brutal killing of elephants for their ivory tusks during the country's 15-year civil war.Elephant experts working in the park had begun to notice the phenomenon after the war ended in 1992.
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