Design an experiment to test the effect of aeration on the growth of roots of bean seedlings. In your

answer, be sure to:

• state one hypothesis the experiment would test

• describe how the control group will be treated differently from the experimental group

• identify the dependent variable in the experiment

• state one reason why many setups should be used in both the experimental and control groups

• state one reason why several different kinds of seedlings were not tested in this experiment