Describe at least 2 reasons (pieces of evidence) for why we know that the continents were once joined together and have since drifted apart.

1 Continental drift

2 the layers of rock

One peice of evidence is fossils.  If similar fossils are in different continents like one is in soutch america and he other is in africa then how would the dino bones be apart? they can't swim...

The other is climates and land forms. Palentologist have found tropical plant fossils in an island of the Arctic ocean where it is way to cold for plants to even grow... Plants can't telaport

#sHoOk ! EVIDENCE!!

mass and volume are the answers you are looking for

i think the answer is a, hope this : )