Into the Information Age Answers

By 2010, three out of four Americans

Which statement best summarizes family life in the United States today?

Which trend contributes to the long-term impact of the US baby boom?

In the latter half of the 20th century, a significant population movement within the United States was toward the Sun Belt region. What was a main cause of this migration, and what challenge did it create?

“I’m surprised and disturbed that Houston’s air quality worsened in this year’s [American Lung Association ‘State of the Air’] report,” said Luke Metzger, director of Environment Texas. “The trend since 1999 had been one of steady progress and instead now it seems we are backtracking and that’s bad news particularly for the hundreds of thousands of people who have asthma or other vulnerable populations like senior citizens. . . .”Current models estimate that more than 60 percent of ozone pollution is from cars, according to Raun, and to address that, the city is trying to encourage practices such as the use of mass transit and transitioning to fuel-efficient or low-emission vehicles.

During the past five decades, Dallas’ population has nearly doubled—growing from 679,000 in 1960 to more than 1.2 million people today. To support this rapid growth, develop a sustainable community and reduce Dallas’ impact on the electrical grid, the city created the Green Dallas Initiative with support from the Energy Department’s Energy Efficiency and Conservation Block Grant (EECBG) Program.Using some of its EECBG funds, Dallas focused on improving the energy efficiency of 248 city-owned buildings, totaling 3.3 million square feet. Following energy audits, the city made energy efficiency improvements that included upgrading to energy-efficient indoor lighting at more than 150 buildings and installing digital HVAC controls—technology that allows the city to monitor energy use and continuously adjust the systems to increase efficiencies and reduce energy consumption—in 100 city-owned facilities.

Americans who migrated to the Sun Belt were moving to a region with

Look at the map.Based on the map, which region of the United States has the highest Latino population?

Which phrases best summarize the US population in the twenty-first century?

Which is an example of a pull factor resulting in immigration?