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Earth Science Questions

Explore questions in the Earth Science category that you can ask Spark.E!

pH range that is optimum for nutrient availability for plant growth

essential in a compost pile as it aids in the breakdown of old plant debris

thin horizontal peds commonly found on surface or subsurface horizons and are partly inherited from the soils' parent materials

spheroidal peds that are loosely packed and characteristically porous; common in the a-horizon

the smallest unit in rock formation or soil formation

nutrients that include N, P, K. Ca, Mg, and S, and can occur in plants at concentrations greater than 500 parts per million

where blocky structures are commonly found

peds that are common in humid regions and appear in irregular cube-like features; could be angular or sub angular

materials needed by plants and other organisms in the soil ecosystem

applies the concept of soil chemical composition in locating and delineating rock types and mineral deposits

terrains that are thrived with stunted growth trees

an element/compound that composes rock and soils

nutrients that include B, Fe, Mn, Cu, Zn, Mo, and Cl, and occur in concentration less than 50 parts per million

main constituents that affect plant growth

condition where intensive leaching removes most of the elements from the rock

the most important natural process in the formation of soil

b-horizon wherein the leached minerals or nutrients from the topsoil are accumulated or deposited

what the rate of soil development is partly dependent on

concept that illustrates the influence of various factors in soil formation

light colored soil layer below the a-horizon