7. D
-Experiment plays many roles in science. One of its important roles is to test theories and to provide the basis for scientific knowledge.
8.C
It provides an objective, standardized approach to conducting experiments and, in doing so, improves their results.
9. A
-Observing using the senses to gather information about an object or event.
10.D
11.C
-The scientific method is a series of logical steps for testing a possible answer to a question.
-OWNANSWERNOTCOPY
