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Food provisioning for long duration space missions and long term planet surface habitation is influenced by many factors. These factors interact with one another and impose requirements on other subsystems within a space vehicle or planet surface habitat. The emphasis behind an effective food provisioning program is to maintain the psychological and physiological well-being of the crew over the entire mission duration. Human behavior is influenced by the quality, quantity and type of systems and activities found in a person's environment. The environment found in long duration space missions is very forbidding, hostile and highly stressful for humans over long periods of time.