The theory of plate tectonics is supported by evidence that crustal plates move relative to each other. how does this observation support the theory of plate tectonics? a. it suggests that plates are dragged around by the ocean currents. b. it suggest that plates are dragged around by air currents. c. it suggest that plates can move independently of one another. d. it suggest that plates cannot move independently of one another

Scientists are conducting a study on the effectiveness of a new drug on memory loss. they are giving some of the test subjects the new drug to find out if it improves their long-term memory. which are possible limitations of this study? check all that apply. a) test subjects may want to participate in additional experiments. b) test subjects may think they should be paid more. c) test subjects may get bored and want to quit early. d) test subjects may have to travel during the experiment. e) test subjects may have full-time jobs. this is multiple choice. you for the !