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рддрдд्рд╕рдо рдФрд░ рддрдж्рднрд╡ рд╢рдм्рдж рдХी рдкрд░िрднाрд╖ा,рдкрд╣рдЪाрдирдиे рдХे рдиिрдпрдо рдФрд░ рдЙрджрд╣ाрд░рдг - Tatsam Tadbhav

рддрдд्рд╕рдо рд╢рдм्рдж (Tatsam Shabd) : рддрдд्рд╕рдо рджो рд╢рдм्рджों рд╕े рдоिрд▓рдХрд░ рдмрдиा рд╣ै – рддрдд +рд╕рдо , рдЬिрд╕рдХा рдЕрд░्рде рд╣ोрддा рд╣ै рдЬ्рдпों рдХा рдд्рдпों। рдЬिрди рд╢рдм्рджों рдХो рд╕ंрд╕्рдХृрдд рд╕े рдмिрдиा...

Mass Extinction:

● Mass Extinction:
» A mass extinction event is when species vanish much faster than they are replaced.
 » This is usually defined as about 75% of the world’s species being lost in a ‘short’ amount of geological time - less than 2.8 million years.

● Mass Extinctions So Far:

1) First Mass Extinction: The Ordovician mass extinction that occurred about 445 million years ago killed about 85% of all species. 

2) Second Mass Extinction: The Devonian mass extinction (about 375 million years ago) wiped out about 75% of the world’s species.

3) Third Mass Extinction: The Permian mass extinction (about 250 million years ago) also known as the Great Dying caused the extinction of over 95% of all species.

 4) Fourth Mass Extinction: The Triassic mass extinction (about 200 million years ago) eliminated about 80% of Earth’s species, including some dinosaurs.

5) Fifth Mass Extinction: This Cretaceous mass extinction (about 65 million years ago) is known for wiping out non-avian dinosaurs.

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