What is the evidence that continents are shifting

Alfred Wegener brought together several lines of evidence to support this theory of continental drift. One is quite simple, that the continents look like they could "fit" together, much like puzzle pieces that have drifted apart.

The proof is that the continents look slightly different after many many years

81 is a composite number

Sequoia national park  /  inyo national forest, california, u.s. mount whitney is the tallest mountain in california, as well as the highest summit in the contiguous united states and thesierra nevada—with an elevation of 14,505 feet (4,421 m).