Today we are left with only ________ of species compared to those that were available in the past.

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Solution

Among the total species estimated to exist on this earth, only 13% i.e. 1.75 million are scientifically described.

Many have become extinct and disappeared due to several reasons.

Of all species that have existed on Earth, 99.9% are now extinct. Many of them perished in through time in five major mass extinctions.

Some biologists think we are currently in the throes of a sixth mass extinction. Some say it could wipe out as many as 90% of all species living today.

This literally translates to the fact that we have only 1/10th of the species and it is still disappearing.

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