Question In a section of the Grand Canyon, scientists have found the fossil remains of several different groups of organisms. The diagram below represents the number and age of the fossils the scientists found. The width of each shaded area in the diagram below indicates the relative number of fossils found. Which of the following statements is supported by the fossil record? (1 point) Responses Group B is now extinct. Group B is now extinct. Group A has been in existence the longest. Group A has been in existence the longest. Group D is the most recent organism to come into existence. Group D is the most recent organism to come into existence. Group B was the most numerous organism 10 million years ago. Group B was the most numerous organism 10 million years ago.

Answer 1

Group B is now extinct.