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.
원문출처 : https://www.cnn.com/2021/10/22/africa/elephants-tusks-poaching-evolution-scn/index.html
원문출처 : https://www.cnn.com/2021/10/22/africa/elephants-tusks-poaching-evolution-scn/index.html