The goal of biological research is to explain and clarify relationships within and between all forms of life. Biology is the science that studies the processes fundamental to all forms of life. Biology strives to answer such questions as: What is life and when does it begin? How do organism grow and reproduce? How and why do pollutants threaten certain life forms? What makes one life form unique and at the same time changeable by genetic engineering or natural selection? And how can human life be sustained and lengthened by new medical advances? An understanding of the biological sciences and their basic principles can help you make informed decisions about biological issues that affect your own life and life in general.