The Marcellus shale is:

a. A major new source of coal that was deposited in the bottom of an ocean without oxygen a long time ago.
b. A major new source of gas that was sitting there right under everyone’s noses and all you had to do was drill in and suck out the gas.
c. A major new source of oil that had leaked into the rocks from sandstone layers above and below.
d. A major new source of gas that has become available because people developed the technological tools to recover the gas.

Option D is correct.

The Marcellus shale is: a major new source of gas that has become available because people developed the technological tools to recover the gas.

Explanation:

The largest natural gas-producing region in the United States, accounting for close to one-fifth of the country’s total gas production is the Marcellus shale.

This shale has emerged as one of the most cost-effective gas plays, given the high production rates of wells in addition to improving drilling efficiencies being brought about by the appropriation of technologies such as pad drilling.

its simple as this, microeconomics is the study of economics at an individual, group or company level, macroeconomics on the other hand, is the study of a national economy as a whole.

hope it =^-^=

the correct answer is economics is a game without winners or losers.

unlike sports or games economic is a game without losers or winner rather it is a game where everyone wins. parties of business doing businesses exchange money with each other and hence exchange is done on the basis of goods. one party takes the goods and other sales it so there is winner on both sides. each party values more highly the good it gets than the good it gives up. both sides exchange only because both intend to increase their value. so there is no concept of lose or win.