One major way in which waves erode land is through the friction of the water on the land itself. Another major way is that the salt in the water erodes the land through chemical processes.
Answer:
The plates are moving and have been for billions of years... they collide and they rip apart. ... The plates carry the continents on their "backs"; if two plates -each with a continent- collide, then a supercontinent can be created.
Explanation: hope this helps
