What is a good and easy experiment I could do for my Year 12 biology assignment? I was thinking something with alcohol and the human body but I wouldn't know what my hypothesis would be. HELP!!

Optical illusions sounds like fun. There are many you could test with. http://www.google.com/search?q=optical+illusions&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a