Original sentence: Scientists use  observations, hypotheses and deductions to propose explanations for natural phenomena in the form of theories: Predictions from these theories are tested by experiment.The scientific method is essentially an extremely cautious means of building a supportable, evidenced understanding of our natural world
Edited sentence: Predictions from these theories are tested by experiment.Scientists propose new assertions about our world in the form of theories: observations, hypotheses, and  deductions.The scientific method is essentially an extremely cautious means of building a supportable, evidenced understanding of our world