Past climate data measured with instruments extends back about:
A) 200 yrs.
B) 500 yrs.
C) 100 yrs.
D) 30 yrs.

Name: Past climate data measured with instruments extends back about: A) 200 yrs. B) 500 yrs. C) 100 yrs. D) 30 yrs.
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Question

Quizplus · Accepted Answer

The reliable instrumental record of climate data only goes back about 200 years. Before that, scientists rely on proxy data sources such as ice cores, tree rings, and sediment records to reconstruct past climate patterns.

Past Climate Data Measured with Instruments Extends Back About