The vertical axis ranges from 0 to 100 in increments of 10. The horizontal axis lists dates from 1776 to 2018. The data is as follows. 1776: Wood, 100%. 1801: Wood, 100%. 1826: Wood, 100%. 1851: Wood, 90%. Coal, 10%. 1876: Wood, 65%. Coal, 34%. Petroleum, 1%. 1901: Wood, 20%. Coal, 61%. Petroleum, 3%. Natural gas, 3%. Hydroelectric, 3%. 1926: Wood, 5%. Coal, 65%. Petroleum, 20%. Natural gas, 7%. Hydroelectric, 3%. 1951: Wood, 2%. Coal, 38%. Petroleum, 40%. Natural gas, 16%. Hydroelectric, 4%. 1976: Wood, 20%. Petroleum, 45%. Natural gas, 29%. Nuclear, 2%. Hydroelectric, 4%. 2001: Coal, 25%. Petroleum, 35%. Natural gas, 20%. Nuclear, 18%. Hydroelectric, 1%. Other renewable, 1%. 2018: Coal, 15%. Petroleum, 35%. Natural gas, 30%. Nuclear, 12%. Hydroelectric, 1%. Other renewable, 7%. The values used in the description are approximate.
Which has been the primary source of energy in the most recent century?
(1 point)
Responses
petroleum, natural gas, and coal
petroleum, natural gas, and coal
hydroelectric and other renewables
hydroelectric and other renewables
wood and coal
wood and coal
wood and nuclear
1 answer
The primary source of energy in the most recent century (from 1918 to 2018) has been petroleum, natural gas, and coal.
In 2018, the energy distribution was as follows:
Petroleum, natural gas, and coal are the primary sources as their combined percentages (80%) significantly outweigh the others. Therefore, the correct response is:
petroleum, natural gas, and coal.
