Sound is measured in ----------.
2. _______ energy is being used and is described as the ‘resources of
the future.
3. Natural resources are called the _________ of a nation
4. The __________ is a group of people who has the power and the
authority to govern a country or a nation
5. Pollution is caused by natural as well as _____ activities
6. Harmful substances are called _______.
7. The __________ is known as the law-making body
8. The ______ is the most popular method of waste disposal.
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Sound is measured in decibals
2 Pontial Resources
Answered by
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1. Hertz is the answer of 1
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