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Reference.org
Self-sustainability
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<p>Self-sustainability and self-sufficiency are overlapping states of being in which a <a href="/facts/Person/XD3Hhqup">person</a>, <a href="/facts/Being/zwJ4I8Bc">being</a>, or <a href="/facts/System/hmqQ4ASX">system</a> needs little or no help from, or interaction with others. Self-sufficiency entails the <a href="/facts/Self/WjDCh04P">self</a> being enough (to fulfill needs), and a self-sustaining entity can maintain self-sufficiency indefinitely. These states represent types of personal or collective <a href="/facts/Autonomy/5ne4C7N8">autonomy</a>. A self-sufficient <a href="/facts/Economy/okLWSsEY">economy</a> is one that requires little or no trade with the outside world and is called an <a href="/facts/Autarky/gAbcFdN1">autarky</a>. </p>