Chapter 5, Problem 6STP

Summary Introduction

Introduction :

The biosphere currently supplies the basic needs for over six billion humans in the form of natural resources. The human population continues to grow and the growth is not evenly distributed throughout the world. An increase in human population growth increases the need for natural resources to supply the basic needs of the population.

Answer to Problem 6STP

Correct answer :

The correct answer is option (D) 85.6.

Explanation of Solution

Explanation/justification for the correct answer :

Option (D) 85.6.

According to the graph given in the question,

The percentage of the United States energy consumption in 2002 of fossil fuel was $\begin{array}{l}=\frac{39.5+24+23}{39.5+24+23+8.3+6.2}\times 100\\ =\frac{86.5}{101}\times 100\\ =.8564\times 100\\ =85.64\\ =85.6\end{array}$

So, the correct answer is option (D).

Explanation for incorrect answer :

Option (A) 22.7. According to the graph, the percentage of the United States energy consumption in 2002 of fossil fuel was 85.6. So, this is an incorrect option.

Option (B) 23.6. Petroleum, natural gas and coal are the fossil fuel in the given graph. The consumption of fossil fuel of United States in 2002 was 85.6 percent. So, this is an incorrect answer.

Option (C) 39.3. In 2002, 85.6 percent fossil fuel energy was consumed by United States. So, this is an incorrect answer.