natural
Oil is Venezuela's most valuable export. The country has one of the largest oil reserves in the world and oil exports make up a significant portion of its government revenue.
The Caspian Sea is itself an important resource.
Proven-in-place reserves is generally a small fraction of a total resource.
Biofuels are important because they are a renewable resource, whereas there are limited reserves of carbon based fuels. Biofuels are also responsible for fewer carbon dioxide emissions.
natural gas reserves
The resource trapped in porous rocks in California is oil. It is the most important energy source produced in the state, with significant oil reserves found in formations such as the Monterey Formation.
mapped and recoverable
natural gas reserves.
oil
The world's nonrenewable resource reserves are ever diminishing.
Yes, it has one of the largest reserves of platinum in the world.
We have the most of coal as a fossil fuel resource. Coal reserves are estimated to be more abundant and widely distributed compared to oil and natural gas reserves.