The past “Big Five” events were mostly caused by physical reasons, for instance, climate
change, sea level fluctuation, volcanic eruption, and asteroid impact. Those
causes are the most different points with the Six Mass Extinction--it is on its way.
It
cannot be denied that this event is actually caused by human influences,
including human activities’ impact on climate change, which leads to rate of
the extinctions faster than the average during a mass extinction. If the
current path continues the Six Mass Extinction would certainly take place on
the Earth in the next few centuries.
However, the world is still relatively
early in the process, therefore, there is still enough time to turn towards and
stop the huge loss in biodiversity though it is a difficult task. If the task
fails, millions of years are required for the Earth to recover from this
human-caused mass extinction so it is urgent to relieve the pressure, which
pushes the current’s species towards devastation.