Each and Every organisms can live only for a certain period of time. The period from birth to the natural death of an organism represent its lifespan.
Lifespans of organismd are not necessarily co-related with their sizes. (For e.g :- the size of crow and parrot are not very different yet their lifespan shows a wide difference).
Whatever be the the lifespan , death of an every organism is a certainty , i.e, no individual is immortal except single - celled organisms .
Lifespans of various organisms :-
Elephant - 60 to 90 years
Dog - 20 to 30 years
Butterfly - 1 to 2 weeks
Crow - 15 years
Parrot - 140 years
Cow - 20 to 25 years
Horse - 60 years
Crocodile - 60 years
Fruit fly - 1 month
Tortoise - 100 to 150 years
Rose - 5 to 7 years
Banana Tree - 25 years
Rice Plant - 3 to 4 months
Banyan Tree - 200 to 300 years
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