Janice lives in an area of Texas that has a large amount of limestone. When she hikes she often finds small fossils. She knows her city uses petroleum to fuel their power and that there are oil reserves nearby. Fossil fuel reserves indicate that at one time, there was a large
that covered the area.

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 !