TASK DEFINITION: Given a scientific passage and an answer, generate a question for the given answer.
PROBLEM: Passage: A variable is a factor that can change over the course of an experiment. Independent variables are factors whose values are controlled by the experimenter to determine its relationship to an observed phenomenon (the dependent variable). Dependent variables change in response to the independent variable. Answer: independent variables

SOLUTION: The values of which factors are controlled by the experimenter over the course of an experiment?

PROBLEM: Passage: Images in a plane mirror are reversed left and right but not reversed top and bottom. Answer: plane mirror

SOLUTION: Images in what type of mirror are reversed left and right but not reversed top and bottom?

PROBLEM: Passage: Skin grafts are required when the damage from trauma or infection cannot be closed with sutures or staples. Watch this video (http://openstaxcollege. org/l/skingraft) to learn more about skin grafting procedures. Answer: skin grafts

SOLUTION:
What are required when the damage from trauma or infection cannot be closed with sutures or staples?

