Question

Approximately ________ mya, all landmasses on earth formed a single supercontinent called ______. as this supercontinent began to break up _____ mya, the modern continents we know today began to drift apart. whales began to evolve_______ mya when these continents were well separated. fossils of early whale relatives that only swam in freshwater are found near ______. fossils of fully _____whale relatives are found _____.

Answer 1

The supercontinent that formed approximately 300 to 200 million years ago was called Pangaea. As Pangaea began to break up, around 200 million years ago, the modern continents we know today began to drift apart. Whales began to evolve around 50 million years ago when these continents were well separated.

Step-by-step explanation:

The supercontinent that formed approximately 300 to 200 million years ago was called Pangaea. As Pangaea began to break up, around 200 million years ago, the modern continents we know today began to drift apart. Whales began to evolve around 50 million years ago when these continents were well separated. Fossils of early whale relatives that only swam in freshwater are found near rivers, while fossils of fully marine whale relatives are found in the oceans.