The answer to the question is the total surface area increases and chemical composition changes. Consider the breakdown of rock into smaller pieces, these fragments vary from huge rocks to smaller sizes. As they are so crushed and broken they tend to occupy much of the surface area than when its just a huge rock.
Washington D.C is the capital of U.S.A and Ottawa is the capital of Canada
The answer to the question above is "B. less available tax revenue" based on the GDP calculation formula. The GDP calculation formula is stated as GDP = C + I + G + (Ex - Im) where C is consumers spending, i is investments, G is government spending, and (Ex - Im) is the difference between export and import. A low GDP means a low spending has occurred in the country which results in a decrease in tax revenue.
