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Din sökning på "swedish" gav 92493 sökträffar
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Kemisk vittring kallas processen när mineralkorn löses upp och sönderdelas i molekyler eller atomer. Det är en viktig process, bland annat för att den frigör ämnen som skyddar marken från försurning och som fungerar som näringsämnen för växter. För de så kallade baskatjonerna kalium, kalcium, magnesium och natrium är vittringen i marken bland de största källorna. Framför allt de tre förstnämnda baBase cations are important in forest soils as nutrients for vegetation and protection against soil acidification. Today, base cations have been lost from soils through acidification and forest harvesting. With low levels in soils, temporary situations of deficiency could occur. One of the largest inputs of base cations to soils is minerals weathering, which makes it an important process. It is, ho
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Conventional social mobility research misses substantial inequalities of opportunity. To capture intergenerational persistence of family social status we need to move beyond parent-child associations in occupation or income. Models that incorporate surname group belonging show that families do not regress to a population mean at the speed implied by parent-child associations. Their mobility is fur
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Classroom language ecologies are increasingly diverse as a result of mobility, migration, and information technology. In these spaces, interlocutors may draw upon shared linguistic and cultural resources but also bring in others. Prime examples are additional-language (AL) classrooms, where there is a shared target language, but where students may have different first languages from their classmat