Sequoia sempervirens is a very, very big tree that lives in some places in the world. It has a really thick and strong trunk, like a big straw, that can go up really, really high into the sky. Its leaves are very small and look like little green hairs that stick out from the branches.
These trees are called "redwoods" and they are special because they grow really, really tall and live for a really, really long time, even longer than some people! They need a lot of water and sunlight to grow big and strong, and they like to live near other redwoods to keep each other company.
People like redwoods because they are beautiful and special, and they have been around for a very long time. Some people even go to visit them and take pictures, because they are just so big and amazing! But we need to be careful around redwoods and not hurt them, because they are very important for our planet and for other animals that live around them.