Different animal species have very different natural life spans — from a couple of weeks in a butterfly to over a century in a tortoise or parrot.

Life span — the length of time an organism is expected to live — varies enormously across species and is largely a species-specific, genetically determined character (though it can be influenced by environment). Matching each organism in column A to its typical life span in column B:

• 1. Butterfly → c. 1–2 weeks — butterflies (as adults) have very short life spans, typically surviving only one to two weeks after emergence.
• 2. Crow → d. 15 years — crows typically live for around 15 years in the wild.
• 3. Parrot → a. 140 years — parrots are notably long-lived birds, with life spans that can extend to around 140 years. …