How is the presently occurring species extinction different from the earlier mass extinctions?

  • A
    Present extinction is natural,while earlier ones were anthropogenic.
  • B
    Present extinction is occurring at a much faster rate due to human activities,whereas earlier extinctions were due to natural causes.
  • C
    There is no difference between the two.
  • D
    Earlier extinctions were caused by pollution,while present ones are caused by climate change.

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