Changes

A '''commodity''' in [[economics]] is a [[goods|good]], such as [[food]], [[metal]]s or [[grain]]s, which is interchangeable with similar [[goods]], and which is available in large quantities.   

A '''commodity''' in [[economics]] is a [[goods|good]], such as [[food]], [[metal]]s or [[grain]]s, which is interchangeable with similar [[goods]], and which is available in large quantities.   

Investors can buy or sell on [[commodities exchanges]] using [[futures contracts]].

Investors can buy or sell on [[commodity exchange|commodities exchanges]] using [[futures contract]]s.

More generally, a commodity is any good in a [[competitive]] [[market]].

More generally, a commodity is any good in a [[competitive]] [[market]].