Demand...
when your mom says it is haha
http://omrpublic.iea.org/ has a general outlook on oil demand, including pricing.
Oil producers merely meet demand. If they produce more than the demand requires, prices go down. Conservation is really a demand issue, not a production issue.
when both demand and supply are elastic
Agriculture accounts for 78%
OPEC wanted to raise the price of oil, so they used the supply /demand theory to get what they wanted. They held back the oil and raised the demand for it.
Because world wide demand would still continue and demand or even the percieved demand is what controls the market.
offices tertiary industry
Because of ever expanding demand, it makes it harder OPEC to sell us enough. As demand for oil increases so do the prices.
Texas has the most oil.
The future cost of a barrel of oil is calculated by examining projections of how much oil is available as compared to how much oil is being used or is in demand. Prices spike when the demand for oil exceeds its availability, from all sources.