A 2007 study conducted by the National Science Foundation found that biodiversity and genetic diversity are codependent—that diversity among species requires diversity within a species, and vice versa. "If any one type is removed from the system, the cycle can break down, and the community becomes dominated by a single species." At present, the most threatened ecosystems are found in fresh water, according to the Millennium Ecosystem Assessment 2005, which was confirmed by the "Freshwater Animal Diversity Assessment", organised by the biodiversity platform, and the French Institut de recherche pour le développement (MNHNP).
Where are the most threatened ecosystems found?
in fresh water

The origin of Tom Robinson is less clear, although many have speculated that his character was inspired by several models. When Lee was 10 years old, a white woman near Monroeville accused a black man named Walter Lett of raping her. The story and the trial were covered by her father's newspaper which reported that Lett was convicted and sentenced to death. After a series of letters appeared claiming Lett had been falsely accused, his sentence was commuted to life in prison. He died there of tuberculosis in 1937. Scholars believe that Robinson's difficulties reflect the notorious case of the Scottsboro Boys, in which nine black men were convicted of raping two white women on negligible evidence. However, in 2005, Lee stated that she had in mind something less sensational, although the Scottsboro case served "the same purpose" to display Southern prejudices. Emmett Till, a black teenager who was murdered for flirting with a white woman in Mississippi in 1955, and whose death is credited as a catalyst for the Civil Rights Movement, is also considered a model for Tom Robinson.
What was the name of the black man who was accused of rape in Lee's town when she was 10?
Walter Lett

A local pioneer of folk song collection in the first half of the 19th century was Shakespearean scholar James Orchard Halliwell, but it was not until the second folk revival in the 20th century that the full range of song from the county, including industrial folk song, began to gain attention. The county produced one of the major figures of the revival in Ewan MacColl, but also a local champion in Harry Boardman, who from 1965 onwards probably did more than anyone to popularise and record the folk song of the county. Perhaps the most influential folk artists to emerge from the region in the late 20th century were Liverpool folk group The Spinners, and from Manchester folk troubadour Roy Harper and musician, comedian and broadcaster Mike Harding. The region is home to numerous folk clubs, many of them catering to Irish and Scottish folk music. Regular folk festivals include the Fylde Folk Festival at Fleetwood.
Who do the many folk clubs today cater to?
Irish and Scottish folk music