A Spaceship Is Designed To Support Animal Life For A Multiyear Voyage To The Outer Planets Of The Solar System. Plants Will Be Grown To Provide Oxygen And To Recyce Carbon Dioxide. Since The Spaceship Will Be Too Far From The Sun For Photosynthesis, Explain What Needs To Be Provided To The Plants For Photosynthesis To Occur, But Keep In Mind What Can

A spaceship is designed to support animal life for a multiyear voyage to the outer planets of the solar system. Plants will be grown to provide oxygen and to recycle carbon dioxide. Since the spaceship will be too far from the sun for photosynthesis, explain what needs to be provided to the plants for photosynthesis to occur, but keep in mind what can maximize plant growth/carbon cycling with a minimum of energy expenditure (remember on a spaceship it would be wise to save energy as much as possible)? If the power fails and the lights go dark, what will happen to CO2 levels? (4 marks)