Misc: what do farms, clocks, and audiences all have?

Questions

Canada is the second-largest country in the world after ----------. Nearly 90 percent of the Canada's population is concentrated within 161 km of the United States/Canada border.?

-------------, Illinois was nicknamed the Windy City because of the excessive local bragging that accompanied the Columbian Exhibition of 1893. ----------- has actually been rated as only the 16th breeziest city in America.?

Colorado's capital of ---------- is the largest metro city in a 600-mile radius - an area almost the size of Europe.?

Coral reefs, sometimes called the "rain forests of the sea," cover more than 6,500 square miles in the -------------, the Gulf of Mexico, off Florida, and the Pacific. They are home to an estimated 550 species of fish, and are major tourist attractions.?

------------------ in southern California is the lowest point in the United States at 282 feet below sea level. The highest point in the contiguous 48 states is also in California: Mount Whitney, which is 14,491 feet above sea level.?