alleryStart learning →Why is climate averaged over 30 years, not 3 years?
ATo avoid using thermometers
BTo make the data look larger
CTo smooth out one-off anomalies
DBecause seasons last 30 years
Answer & Solution
Correct answer: C. To smooth out one-off anomalies
A long period smooths out yearly variation and anomalies while still showing longer trends.
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