A paleontologist discovers tropical plant fossils in rock layers in northern Canada. These fossils are similar to plants that grow only in warm, humid environments today. What do these fossils tell us about the past climate in Canada?

The fossils resemble plants that today grow only in warm, humid environments. Their presence in northern Canada is evidence that the area once had a warm, moist tropical climate. They do not show that Canada was always cold, a desert, or covered by a shallow ocean.

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