[~HOW TO MANIPULATE INDEPENDENT VARIABLES~] **UPDATE: Some people are really confused and lost. The one thing, the ONLY thing, you need to do is check which settings create the most bubbles. That's it. Light: a) [L] key to raise light level b) [D] key to lower light level Light Colour: a) [0] key for white light b) [1] key for red light c) [2] key for blue light d) [3] key for green light Carbon Dioxide Level: a) [Up Arrow] to raise the carbon dioxide level b] [Down Arrow] to lower the carbon dioxide level Time: a) [SPACE] to reset the timer +++++ [~VOCABULARY~] 1) Photosynthesis: The process in which plants and some bacteria use sunlight, carbon dioxide and water to create energy and oxygen 2) Carbon Dioxide: The waste product that animals, including human beings, create when they exhale air 3) Controlled Variable: The constant variable used to test the accuracy of results 4) Independent/Manipulated Variable: The variable changed in order to change the dependent variable 5) Dependent/Responding Variable: The variable which shows the result of changing the independent variable