The line graphs show the proportion of four different types of fuels in use, including wood, coal, oil, and gas from 1800 to 2000.
Overall, the most notable change can be seen that wood decreased dramatically at the end of the period. By contrast, coal increased sigificantly through the period, despite its decreasing in 1900. Moreover, there were a notably change with oil and gas.
Regarding wood and coal, in 1800, wood was the most widely used, peaking at 100%. However, its figure dropped sharply to 0% in 2000. Contrastively, coal started with just 0%. After that, its proportion increased rocketly to nearly 70% in 1900 before a gradual declined to approxmately 35% over the years.
Turn into the other data, oil began with 0% in 1900 and then experience a consistent growth, accounting 30% in 1900. Similarly, gas usage reamained 0% in 1800. Subsequent to this, its increased steadil, reaching 35% in 1900.
