Which piece of evidence suggests that Africa, Antarctica, South America, India, and Australia formed Gondwanaland 200 million years ago?
coal fields
O a shared ocean
folded mountains
land formations created by glaciers

How were the okanogan highlands formed? a. by subduction, which caused huge folds in earths surface b. as a result of retreating glaciers carving great valleys into the earth c. when molten rock from under the earth approached the surface d. when the collision of volcanic island chains and ocean rocks formed new earth