A hedger buys a futures contract, taking a long position in the wheat futures market. What are the hedger's obligations under this contract? Describe the risk that is hedged in this transaction, and...

A hedger buys a futures contract, taking a long position in the wheat futures market. What are the hedger's obligations under this contract? Describe the risk that is hedged in this transaction, and give an example of someone who might enter into such an arrangement.