Economics are involved in every part in food prices. The main source of rising food prices is usually fuel prices. The agriculture industry uses fuel in everything from tractors to trucks shipping goods across the country. As fuel prices go up, so does the cost to create "food". Since the profit margin on food is already minimal, price of food must go up anytime there is a rise in cost to manufacture.
An Economic Expansion
This is called inflation or more precisely "price inflation".
Yes, the price of gold per ounce has been continually rising. Price is getting more and more rare. Therefore, its value will just keep on rising and rising.
rising profit, because in case of scarcity, the price signal induces producers to increase their capacity because rising price means rising profitability. :)
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The price of silver (and other precious metal) bounces around. Sometimes it's rising; sometimes it's falling.
I think the price of gold is rising so fast because the economy is bad. I have a friend who invests in gold bars.
oil company GREED
Because they are running out.
The price of gold is expected to keep rising. This is because of the state of the economny, demand for gold, and the continuing decrease of the value of a dollar.
CPI (Consumer price index)
rising prices