Can you please answer these in one simplified sentence? 1. Observe: Set Temperature to 24C, Light intensity to 50%, and CO2 level to 200 ppm. A. Move the Temperature slider up and down. Were you able to increase oxygen production? _____________________ (Return the slider to 24C when finished.) B. Move the Light intensity slider back and forth. Were you able to increase oxygen production? _____________________ (Return the slider to 50% when finished.) C. Move the CO2 level slider back and forth. Were you able to increase oxygen production? _____________________ (Return the slider to 200 ppm when finished.) 2. Analyze: In this situation, what was the limiting factor? _____________________________ How do you know? _________________________________________________________ _________________________________________________________________________ 3. Challenge: In each of the situations below, use the Gizmo to find the limiting factor. Temperature Light intensity CO2 level Limiting factor 25C 60% 700 ppm 15C 20% 200 ppm 30C 50% 400 ppm 4. Think and discuss: Suppose you were a farmer trying to grow plants in a greenhouse. Why would it be important to know what the limiting factor is? __________________________________________________________________