why is it so that the life span of a parrot is 140 years & that of a crow is just 15 years though both are of same size ?

Dear student,
Please find below the solution to the asked query


Life span is the period between the birth and death of an organism. It is often given as a rough estimate based on the longest lived organism of its species known to date. The factor that correlates with maximum life span is body size. As per researches, larger animals live longer than smaller animals. However, only size does not control life span, there are other major factors like genes and environmental factors that control life span. The genes and environmental factors together determine the ageing of cells of body of an organism and ultimately its death. Hence, the life span of parrot and crow is inherited i.e written in genes.

Hope this information will clear your doubts about the life span.
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