5. How was Pennsylvania significant in the production of fossil fuels?

Pennsylvania was the third-largest coal-producing state in the nation , and it was the second-largest coal exporter to foreign markets.

Pennsylvania, endowed with extensive fossil energy resources, is a leading East Coast supplier of coal, natural gas, electricity, and refined petroleum products to its own industries and to the nation.

The Appalachian Mountains in the state hold rich coal resources and run diagonally southwest to northeast through Pennsylvania, dividing the Ohio River valley in the west from the Susquehanna and Delaware River valleys in the east.

 The Marcellus Shale, the largest U.S. natural gas field, follows the arc of the mountains and underlies about three-fifths of the state.

Hope it helps.

254.34

step-by-step explanation:

the formula for area of a circle is given by

a = pi * r^2

a = pi * 9^2

a = 81*pi

using 3.14 as an approximation for pi

a = 3.14*81

a = 254.34

martin luther king (1929-1968) was an activist for the african american rights, mr. king has a profile of a kind leader that built a tenacity, respect and full of hope future. he was an activist through civil disobedience and no violence pressure mechanisms. he tried to build a more egalitarian and fair society. his efforts carried a reivindication message of the civilian rights to every west corners. for that reason, he won the nobel prize in 1964.