Biological variation represents the natural fluctuations in laboratory test results that occur both within an individual over time and among different individuals. In the context of coagulation ...

Grazing of grasslands changes soil physical and chemical properties as well as vegetation characteristics, such as vegetation cover, species composition and biomass production. In consequence, ...

Demographic parameters and population growth rates vary among populations of the same species. Such variation can be extensive, as shown by a comparison of nine published studies of black-legged ...