ABSTRACT
I. BIOREGENERATIVE SYSTEMS A. Background The balance of the carbon dioxide (CO2), oxygen (O2), and water in Earth’s biosphere is largely dependent on photosynthetic and transpiration processes of green plants. Indeed, it is photosynthesis that ultimately provides the food and energy that humans and other animals depend on. As technology levels advance, humans will eventually be able to travel away from Earth’s sustaining biosphere on long-term space travel. One approach to providing consumables for space travel would be to grow plants (crops) as part of a bioregenerative life support system.
