How did the use of coal affect human activity in the 1800s?

Coal can be described as a fossil fuel which is made from millions of years ago dead plants. It is a non-renewable energy source.

Humans began using coal abundantly in the 1800s and it became a source of power for them. They used coal to power the steamships and rails which provided them with better opportunities for travelling. People used coal to manufacture goods a that time. By the end of 1800, coal had become such a powerhouse that people started making electricity out of it.

the real answer is b. scintillation counter

the correct answer is 4) heat and pressure

metamorphic rocks arise from transformation of existing rocks types, in a process called metamorphism. during metamorphism the original rock(prolith) change into metamorphic rock by heating (150-200c) and pressure of more than 1000 bar. the original rock can be sedimentary, igneous, or existing metamorphic rock.