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All of the following questions are testable in a scientific exploration about changes to Earths surface EXCEPT-
A: How can the effects of wind and water erosion be measured?
B: How does water erosion and deposition result in construction of a delta?
C: Why the Sun appear to move across the sky?
D: What constructive forces result in changes to Earths surface?

Respuesta :

C because you can't control the sun moving across the sky and therefore is not testable in an experiment.

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