[Hints: Introduction, Salt; Iron; Petroleum; Coal; Conclusion.] Introduction: Minerals are substances that they are dug out from mine under the … [Read more...] about Essay on Some Very Useful Minerals
Coal
Describing the Chart of The Production of Electricity by Coal and Hydroelectric Sources
Answer: Look at the following chart. It shows the production rate of electricity from coal and hydroelectric sources in different years. Now, describe … [Read more...] about Describing the Chart of The Production of Electricity by Coal and Hydroelectric Sources