Question

biological weathering is driven by organisms like plants, lichens, and mosses, accelerating rock breakdown by chemically altering rock substances. what is the source of parent material for soil? bacteria and algae in water water and wind currents rock pieces from bedrock

Explanation:

Soil parent material refers to the geological material in which soil horizons form. Bedrock is the solid rock layer beneath the soil, and through weathering (like the biological weathering mentioned, which chemically alters rocks), rock pieces from bedrock break down to form the parent material for soil. Bacteria and algae in water are organisms but not the source of parent material. Water and wind currents can be agents of erosion and transport but not the primary source of the parent material itself (the material they act on would come from rocks like bedrock).

Answer:

rock pieces from bedrock