The Bible is a collection of 66 individual books. It includes different writings such as laws, historical narratives, biographies, poetry, prophecies, and letters. There were 40 authors who wrote the different books. The Bible records the beginning of Earth’s history, and the very first sentence is “In the beginning, God created the heavens and the Earth” (Genesis 1:1). Before this, there was no history, thus the term “prehistory” is unnecessary. The Bible gives us an understanding of biology (created kinds), anthropology (the dispersal and creation of people groups after the tower of Babel), linguistics (tower of Babel), astronomy (planets and stars) and geology (the results of the catastrophic flood). The Bible is not a science textbook—those have to be updated every few years.
For a more detailed overview of the Bible, see the following link: http://www.gotquestions.org/Bible-summary.html