Exam 5: Future Challenges

The major cause of air pollution is the burning of gasoline, oil or coal

The current population of the earth is closest to what number?

Which of the following is not an example of infrastructure?

The Joint Dark Energy Mission and the Titan Explorer are both future challenges from which discipline?

U.S. is currently the world leader in percentage of paper and cardboard recycled.

The number of doctorates awarded in the U.S. has increased due to a sharp increase in the number of U.S. citizens enrolled in those programs

Particulates and CO₂ are both examples of what?

The U.S and western Europe are currently experiencing higher birth rates than those found in the rapidly developing countries found in Asia, Central and South America.

The earth's population is currently said to be increasing in what way?

What letter grade did the American Society of Civil Engineers assign to the United States when evaluating its infrastructure, in both 2005 and 2009?