Because steam engines runs on coals and it is an abundant resource
Witnesses reveal what someone has done. For example when someone does a bad thing and you saw it, that means you were a witness that the person did the do that bad thing.
Answer:
Could you make the picture clearer maybe?
Explanation:
Answer:
Hmm.... D.
Explanation:
A demand shifter is a change that shifts the demand curve for a product. One of the demand shifters is buyers' expectations. If a buyer expects the price of a good to go down in the future, they hold off buying it today, so the demand for that good today decreases.