The exploitation of shark species has been implicated in numerous studies explaining sharp declines in shark populations all over the world [e.g. 69], [70], [71].
It did not explain the sharp rise in numbers.
It could also explain the sharp falls in retail spending, as consumers pare back spending in anticipation of these measures coming into play.
The growing use of options as a form of pay helps to explain the sharp rise in the number of very wealthy households.
People in all 16 countries surveyed said America's relief effort after the Asian tsunami inclined them more favourably towards it (this may explain the sharp improvement in Indonesian opinion).
Trying to avoid rigid labor rules, employers have shifted a quarter of the country's work force to temporary contracts, helping explain the sharp swing in Spain's employment level.
Some, like William Julius Wilson, then of Chicago University, pointed to the decline of inner-city manufacturing to explain the sharp spike in poverty in black inner-city neighbourhoods between 1970 and 1980 in keeping with Kain's logic.
A study by Roger Tarling, head of the Home Office research and planning unit, claims that a 25% increase in the prison population would reduce the crime rate by 1%.Those who argue that prison does not work still have to explain the sharp cut in recorded crime in Britain over the past five years.
The latest analysis, done at the National Center for Atmospheric Research in Boulder, Colo., found that natural shifts in the output of the sun and other factors were responsible for the warming from 1900 to 1950, but could not explain the sharp and continuing rise since 1970.
Trying to explain the sharp drop, Joseph T. Landers III, executive vice president of the Greater Baltimore Board of Realtors, suggested that half the decline might be attributed to the withdrawal of investors who, during the boom, bought a property, fixed it up and then resold at a profit.
