Since the origin of life on the earth, there were five episodes of mass extinction of species

Since the origin of life on the earth, there were five episodes of mass extinction of species.
(i)How is the ‘Sixth Extinction’, presently in progress, different from the previous episodes?
(ii) Who is mainly responsible for the ‘Sixth Extinction’?
(iii) List any four points that can help to overcome this disaster.

(i)The rates are faster/accelerated/ current species extinction rate are estimated to be 100-1000 times faster than in the pre-humans times.
(ii)Human activities.
(iii)(a) Preventing habitat loss and fragmentation.
(b)Checking over exploitation.
©Preventing alien species invasion
(d)Preventing co-extinction
(e)Conservation/ Preservation of species.