The fragile ecosystem in the Loess Plateau is associated with environmental degradation

Prices are not updated to the current year to make these results comparable to Lu et al.’s study in 2003; input and output prices have changed at different rates during the past 10 years and some prices could not be recovered from Lu et al. This assumption does not affect lessons from this study.Three SV …

The key assumption was that the rate of injury and illness was the same on large and small farms

Employers use OSHA form 300 to record each incident, including the employees name, job title, date, brief description of the incident, days absent, and other pertinent data. Employers sum the numbers within categories each year. The BLS, Office of Safety, Health, and Working Conditions, surveys roughly 250,000 firms and state and local government agencies, collecting …