Science is defined as a systemized body of knowledge that is organized like a tree with many branches. Cosmology, the study of the universe, has two main branches: astronomy, which studies heavenly bodies, and geology, which studies the earth. Geology also has branches, including seismology, the study of earthquakes. Biology also has two main branches: zoology, which studies animals, and botany, which studies plants. Science can be either beneficial if used for good, or destructive if misused. The study of religion is called theology, but religious doctrines should not replace what is taught in the Bible.