Wide-open spaces: According to the latest Census Bureau estimates, only 19 of Wyoming’s 53 counties have more than 10,000 residents. Three Montana counties have fewer than 1,000 residents; the 500 people in Petroleum County are spread over 1,600-plus square miles.

By definition, sterling silver is not pure silver. It is an alloy consisting of 92.5 percent silver, and 7.5 percent other metals, most usually:

A) Gold

B) Copper

C) Lead

D) Nickel

Tuesday’s answer: “So Others May Live” is the motto of the rescue swimmers of the U.S. Coast Guard, which is part of the Department of Homeland Security.