Nearly _______ years ago, most of Canada and parts of America were covered by an ice sheet. Physical Geography and the Environment Nearly _______ years ago, most of Canada and parts of America were covered by an ice sheet. Answer: 18,000 Learn More : Share this Share on FacebookTweet on TwitterPlus on Google+
If the answers is incorrect or not given, you can answer the above question in the comment box. If the answers is incorrect or not given, you can answer the above question in the comment box.