Final answer:
Air is a necessary condition for human life as we cannot survive without oxygen, but it is not solely sufficient for survival as we also need water, food, and appropriate living conditions.
Step-by-step explanation:
Air is a necessary condition for human life. Every breath we take is a testament to our reliance on the Earth's atmosphere. Earth's atmosphere not only provides oxygen necessary for human respiration but also maintains appropriate atmospheric pressure that facilitates our breathing processes. Without air, specifically oxygen, humans cannot survive for more than a few minutes. Although air is critical, on its own, it is not enough to ensure survival. A sufficient condition for human survival would be one that, by itself, ensures survival, which would encompass not only air but also water, food, and a suitable range of temperature and pressure.