The Cordilleran ice sheet was a major ice sheet that periodically covered large parts of North America during glacial periods over the last ~ 2.6 million years.
Large parts of North America was periodically covered by Cordilleran Ice Sheet.
The Cordilleran ice sheet was a major ice sheet that periodically covered large parts of North America during glacial periods over the last ~ 2.6 million years.

Based on the evidence paragraph above what can we conclude about the claim "Large parts of North America was periodically covered by Cordilleran Ice Sheet."?

Options: 

 - supported

 - refuted

 - not enough information
supported
The Cordilleran ice sheet was a major ice sheet that periodically covered large parts of North America during glacial periods over the last ~ 2.6 million years.

Based on the evidence paragraph above what can we conclude about the claim "Large parts of North America was periodically covered by Cordilleran Ice Sheet."?

Options: 

 - supported

 - refuted

 - not enough information
user
supported
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