SEQUOIA BRANCH

Now known as the largest trees on Earth, sequoias live a very long time. Most of them grow in North America. Some are 1,000 years old and 150 meters (492 feet) high. Fossils show that sequoias have remained the same for millions of years; that is, they have not undergone a process of evolution. The fossil seen here of a 50-million-year-old sequoia branch is identical to that of trees living today.