6. The ocean is the a. shortest ecosystem in the world. b. smallest d. longest c. largest _7. What do you call the process wherein plants make their own food? a. cellular respiration b. photosynthesis c. protein synthesis d. carbon fixation 8. How many ATP molecules are needed to split glucose into to? a. 2 ATP b. 6 ATP C. 4 ATP d. 8 ATP 9. Which of the following is NOT a requirement of photosynthesis? a. oxygen b. light energy C. water d. carbon dioxide 10. The main source/s of oceanic pollution is/are: a. plastics, volcanic ashes, nitric oxide c. detergent, nitric oxide, oil c. oil, ozone, methane d. petroleum, oil, detergent​