Practice question · Multiple choice
Why can variance matter more than average rainfall for a historical population?
Hints
- What happens to a population sized for the mean when a bad year arrives?
- Think about which year does the killing.
Show the answer
D. Populations live at the level the bad years permit, not the average ones
Why
Two regions with identical average rainfall are not the same place if one delivers it reliably and the other does not. The bad year sets the ceiling, and everything above it is temporary.
Practise Climate and Biomes
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