entists think will cause the next mass extinction?? A. Human activity. B. Natural causes. C. Unknown reasons.РРRead and exploreР1. Read the passage and finish the two tasks:? ① Check whether your answers in the quiz are right.? ② Get the main idea of each paragraph.РРRead and exploreРCheck the answers in the quiz.Р① How many times up to today has life on Earth almost died out?? A. Once. B. Five times. C. More than 10 times.РРРRead and exploreР② About which percent of all species on Earth became extinct ? during the mass extinction known as the “Great Dying”?? A. Less than 10%. B. Nearly 50%. C. More than 90%.?③ What do scientists think will cause the next mass extinction?? A. Human activity. B. Natural causes. C. Unknown reasons.РР
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