Soil and land Land- Portion of world not covered by water Soil -a thin covering over the land consisting mixture of minerals, organic material, living organisms, air, and water Soil formation-a combination of physical, chemical and biological process over time the soil building begins with the fragmentation of the parent material Parent material -ancient layers of rock, or more recent geologic deposits from lava(4) flows or glacial activitySoil and Land • Land - Portion of world not covered by water. • Soil – a thin covering over the land consisting mixture of minerals, organic material, living organisms, air, and water. • Soil formation – a combination of physical, chemical and biological process over time – the soil building begins with the fragmentation of the parent material – Parent material - ancient layers of rock, or more recent geologic deposits from lava (熔岩） flows or glacial activity