1. The Scientific Method Applied to an Ecological Problem

2.  Identify the problem and state it as a question to be solved.

3.  Identify factors related to the problem  Consider the situation and identify a variable that you believe is most likely to be the cause  The hypothesis is a logical solution to the problem

4.  All variables except the one being tested for need to be held constant  Which variables are held constant in this experiment?

5.  A good experiment will manipulate the experimental (independent) variable and allow for observation of the results in the dependent variable

6.  Before actually doing the experiment you should predict the results  Your prediction should be based on the assumption that the hypothesis is correct

7.  The experiment should have a control group for the purpose of comparison.  If the only difference between the two groups is one variable, it must be responsible for the difference in results

8.  Compare the actual results to the results that you predicted  Is this result what you would have expected?

9.  A graph allows you to visualize results more easily than raw data  Look at the slope of the graphs. Which group had the faster growth rate?

10.  If your prediction was correct, your hypothesis should be accepted  If your prediction did not match results, reject or modify it  Your conclusion should always include a statement that directly answers the problem  Why do marsh grasses grow to different heights in different places?