Today, 65 million years after the extinction of dinosaurs, the earth is facing another crisis of mass extinction. By the end of the 20th century, about 20% of the world's species had become extinct. Now, many rare species, such as giant pandas, Siberian tigers, North American hawksbill turtles and Brazilian mahogany, are in danger of extinction. Three scholars have predicted this. Scholar 1: if the giant panda becomes extinct
will the Siberian tiger; scholar 2: if the North American hawksbill turtle becomes extinct, then the Brazilian mahogany will not become extinct; scholar 3: either the North American hawksbill turtle will become extinct, or the Siberian tiger will not become extinct.
Giant pandas will be extinct, Brazilian mahogany will not be extinct