WORLD HISTORY

Detailed explanation-1: -This means that nonrenewable resources are limited in supply and cannot be used sustainably. There are four major types of nonrenewable resources: oil, natural gas, coal, and nuclear energy. Oil, natural gas, and coal are collectively called fossil fuels.

Detailed explanation-2: -Fossil energy sources, including oil, coal and natural gas, are non-renewable resources that formed when prehistoric plants and animals died and were gradually buried by layers of rock.

Detailed explanation-3: -Nonrenewable resources are natural resources that exist in fixed amounts and can be used up. Examples include fossil fuels such as petroleum, coal, and natural gas. These fuels formed from the remains of plants over hundreds o f milli ons of years.

Detailed explanation-4: -Because coal takes millions of years to develop and there is a limited amount of it, it is a nonrenewable resource. The conditions that would eventually create coal began to develop about 300 million years ago, during the Carboniferous period.

Detailed explanation-5: -Renewable energy is energy from sources that are naturally replenishing but flow-limited; renewable resources are virtually inexhaustible in duration but limited in the amount of energy that is available per unit of time.

Detailed explanation-6: -The main examples of non-renewable resources are fuels such as oil, coal, and natural gas, which humans regularly draw to produce energy. Apart from non-renewable resources, there also exist renewable resources that are also a source of energy.