Dr. Nancy wants to understand the effect of exercise on self-reported levels of depression. She assigns participants to either a group that exercises 30 minutes each day or a group that does not exercise at all. She then records the depression level of her participants after a period of time. In this example, exercise would be the and level of depression would be the .

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Different plant and animal species have a great variety of body structures that them survive and reproduce. which of the following is also true? a. the individual cells of plants and animals cannot perform specialized functions. b. the individual cells of plants and animals function in very similar ways. c. the individual cells of plants and animals do not share any similarities. d. the individual cells of plants and animals do not contain genetic information. reset submit

2. what three things are involved in a renal transplantation?