Question

Which of the following is a mineral fuel?

1. coal
2. silver
3. petroleum
4. Manganese

• A. 1, 3
• B. 3, 4
• C. 3 only
• D. All

Answer 1

Answer:

A. 1, 3

Resources

• The things directly obtained from nature and are useful to man are called natural resources. Our nature is endowed with innumerable resources such as air, sunlight, wind, trees, water, etc.

• The living resources are called biotic resources and non-living resources are called abiotic resources.

• Resources can be classified as renewable (available at all times) and non-renewable (exhaustible resources).

• Decrease in the availability and deterioration in the quality of resources due to reckless usage is called resource depletion. This resulted in depletion of resources and changes in the environment.

• Dodo, Auroch cattle, Asian cheetah, etc. Became extinct