I think that they're a person who sometimes puts their life on the line to find out some important work. I think they are one of the smartest people on the earth. A scientist is a person who thinks up inventions. They make things that are new and weird. Sometimes, they use chemicals and things like that.
Scientists are very smart.
Anyways, scientists do researches as well. They do things like tell what sap comes from a pine tree. They will research on anything new or old. Just about all they do is research plants and animals. A scientist is a person who studies and does experiments on science.