Biology / Unit 14 Bio 3553 short lesson, about 20 seconds
The Three Survivorship Curve Types
Captions available
The idea
A survivorship curve plots survivors at each age interval: Type I when death concentrates late, Type II when even across ages, Type III when death concentrates early.
In practice
Humans show Type I; birds show intermediate Type II; most fish show Type III with heavy early loss.
Where people slip
Curve type correlates with parental care, but it measures only survival, not that cause.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
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