Which of the following examples shows the influence coal has had on human activity?

coal use in steam engines led to easier access to goods.

coal use in steam engines allowed people to travel on planes.

coal use in steam engines led to the discovery of natural gas wells.

coal use in steam engines caused a decrease in railroad profits.

The correct option is A. Coal use in steam engines led to easier access to goods.

Explanation:

Coal is used in steam engines as a fuel. Coal is one of the cheapest source of energy and hence it has been serving mankind with various benefits since a long period of time.

The coal-based steam engines played a very important role in the developments made during the Industrial Revolution. Many industries started using coal as a power material and made progress.

The steam engines made it possible to transfer goods from one place to another very easily. As coal was a cheap source, hence trading of goods by steam engines was not very costly.

The human eye can detect up to 700 nanometers but the range adjacent to the visible spectrum is called the near infrared and the longer wavelength part is called far infrared. The region just below the visible in wavelength is called the near ultraviolet. Hence the visible part of electromagnetic spectrum lies in between ultraviolet and infrared.