Answer:
1. Fossils of the same stuff are found on continents with an ocean to separate them.
2. The continents fit together (back in like 1900 or something a kid looked at the coastlines of south America and Africa and asked the teacher 'did they ever fit together.' The teacher called him a stupid idiot and failed him for geography. True story)
3. Continental drift or something... look it up in your textbook
Step-by-step explanation: