6. When conducting experiments, scientists use ________ to help guide their processes. 7. The ________ is the one factor that can be manipulated by the experimenter. 8. Scientists use a form of shorth

6. When conducting experiments, scientists use ________ to help guide their processes. 7. The ________ is the one factor that can be manipulated by the experimenter. 8. Scientists use a form of shorthand called ________ to express very large or very small numbers. 9. Most scientific studies and experiments use a standard system of units called ________.