Conclusion

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.