One of the rarest marine mammals in the world, the North Atlantic right whale, has declined 8% in population over the past year, which researchers call deeply concerning for the species' survival.
원문출처 : https://www.cnn.com/2021/10/26/us/north-atlantic-right-whales-decline-population-scn-trnd/index.html
원문출처 : https://www.cnn.com/2021/10/26/us/north-atlantic-right-whales-decline-population-scn-trnd/index.html