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