Article: Under anaerobic conditions, iron and steel alloys are slowly oxidized by the protons of water concomitantly reduced in molecular hydrogen (H
2). The anaerobic corrosion of iron leads first to the formation of ferrous hydroxide (green rust) and can be described by the following reaction:

Question: What is another name for formation of ferrous hydroxide?
Ans: green rust

Article: Hunting in the United States is not associated with any particular class or culture; a 2006 poll showed seventy-eight percent of Americans supported legal hunting, although relatively few Americans actually hunt. At the beginning of the 21st century, just six percent of Americans hunted. Southerners in states along the eastern seaboard hunted at a rate of five percent, slightly below the national average, and while hunting was more common in other parts of the South at nine percent, these rates did not surpass those of the Plains states, where twelve percent of Midwesterners hunted. Hunting in other areas of the country fell below the national average. Overall, in the 19962006 period, the number of hunters over the age of sixteen declined by ten percent, a drop attributable to a number of factors including habitat loss and changes in recreation habits.

Question: What is hunting in the U.S. not associated with?
Ans: any particular class or culture

Article: The major time divisions of classical music up to 1900 are the early music period, which includes Medieval (5001400) and Renaissance (14001600) eras, and the Common practice period, which includes the Baroque (16001750), Classical (17501830) and Romantic (18041910) eras. Since 1900, classical periods have been reckoned more by calendar century than by particular stylistic movements that have become fragmented and difficult to define. The 20th century calendar period (19012000) includes most of the early modern musical era (18901930), the entire high modern (mid 20th-century), and the first 25 years of the contemporary or postmodern musical era (1975current). The 21st century has so far been characterized by a continuation of the contemporary/postmodern musical era.

Question: What years dictate the Baroque period?
Ans: 16001750

Article: Cotton remained a key crop in the Southern economy after emancipation and the end of the Civil War in 1865. Across the South, sharecropping evolved, in which landless black and white farmers worked land owned by others in return for a share of the profits. Some farmers rented the land and bore the production costs themselves. Until mechanical cotton pickers were developed, cotton farmers needed additional labor to hand-pick cotton. Picking cotton was a source of income for families across the South. Rural and small town school systems had split vacations so children could work in the fields during "cotton-picking."

Question: What part of the southern population worked as sharecroppers?
Ans:
landless