They're often valuable for vastly different reasons â like the World War II-era coins minted from atypical metals, or double-printed pennies â but each one is easy to miss if you're not paying attention. See also: Californian Couple Finds $10 Million Worth of Gold Coins in Tin Can.
A subsistence economy is a non-monetary economy which relies on natural resources to provide for basic needs, through hunting, gathering, and subsistence agriculture.
The most common type is intensive subsistence agriculture, which is often referred to as traditional subsistence agriculture. This type of agriculture is practiced in India, China, Vietnam, Cambodia, Mexico and Peru.The crops are grown on a small plot of land year after year using human and animal labor.his type of agriculture is very labor-intensive because all of the work is done by humans and animals and only hand tools and simple machines are used to work the land. Subsistence agriculture does not rely on chemical fertilizers or pesticides and instead utilizes more natural techniques.