What is Endangered, Vulnerable, Rare & Extinct Species? 

A) Based on the International Union for Conservation of Nature and Natural Resources (IUCN):-
Normal Species
Endangered Species
Vulnerable Species
Rare Species
Endemic Species
Extinct Species
B) Negative factors that cause such fearful depletion of the flora and fauna.
*CREDITS*
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Firos AK / CC BY-SA (creativecommon...)
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Firos AK / CC BY-SA (creativecommon...)
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Darren Swim / CC BY-SA (creativecommon...)
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N. A. Naseer / www.nilgirimarten.com / naseerart@gmail.com / CC BY-SA 2.5 IN (creativecommon...)
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Sirsendu Gayen / CC BY-SA (creativecommon...)
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Atharva Damle / CC BY-SA (creativecommon...)
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Aafi Ali / CC BY-SA (creativecommon...)
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Shubhankar Sakalkale / CC BY-SA
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