Russia is the richest country in terms of natural resources.It has the biggest reserves of natural gas and wood. In addition, it has the world's second-largest reserves or coal and the uniro-largest reserves or gold.However, in terms of average wealth per person, it's not even in the top 50 countries.

Nigeria is the largest producer of oil in Africa. It is one of the 20 poorest countries in the world.Many people who live in its oil-producing regions earn less than $1 a day.

India is the third biggest coal producer. In terms of average wealth per person, India comes 130 in the world.

China is the world's biggest producer of coal.It mines over 47% of the world's total.

The USA is the biggest oil producer in the world, bigger than Saudi Arabia. There's been some controversy about how it drills for oil in the sea.

Only three of the 25 biggest oil companies in the world are American. The three biggest are Saudi, Russian and Iranian.

If we consume coal at the current rate it will last for two hundred years. Some argue oil will run out in 50 years and gas will run out in 60 years. Others say there is more than that, but it's very expensive to extract from the ground.