Ike is concerned about global warming. He believes that much of the problem is caused by the intense heat arising from surfaces such as streets and the roofs of buildings. Ike convinces the principal of his school to run an experiment. With the help of other students, Ike raises money for a rooftop garden to be put in on one half of his school building. For one semester, Ike keeps track of the air temperature on the half of the building with the rooftop garden and the half of the building without the garden. He finds that the average temperature near the rooftop garden is 73°F. The average temperature away from the garden is 84°F.
find the:
a. control group

b. independent variable

c. dependent variable

d. conclusion(s)

e. improvements to the experiment