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Perspective -- Geologic time : The quaternary period ; Archeology ; Estimating geologic time ; Early estimates of geologic time -- Weathering and erosion : Structure of the rocks ; Structure in ...

Soils have a natural characteristic called the cation exchange capacity (CEC) that allows them to hold (and exchange) cations (e.g., Ca+2 or Na+). These cations are held tight enough on the CEC that ...

We'll also teach you how to amend the soil you have so you can grow the plants you want. Depending on where you live, you're likely to have one of six different types of soil: loam, clay, sandy, silty ...

Rapid advances in sensing technologies and artificial intelligence are transforming how we observe, understand, and manage ...

Saltwater intrusion from sea level rise and tidal flooding is increasing soil salinity risks in coastal farm fields (Figure 1). Soil salinity is related to the presence of soluble salts and cations ...