Question

IV. Answer in brief.
1. What types of tools were invented by early humans?
2. Name the energy resources that cause pollution of environment.
3. What was a major invention in the early history of mankind?
4. Name a fossil fuel.
5. What is solar energy?
V. Answer the following questions.
1. What do you understand by the term "Industrial Revolution"?
2. Name any two early applications of the steam engine.
3. Write any three uses of solar energy.
4. Briefly explain Benjamin Franklin's experiment.
5. What are the advantages of using wind energy?​

Answer 1

Answer:

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