04e705d5_c__St__Science_SOL_s___Socrata__Subject
[Row number] 215 [Grade] 3 [SOL] 3.7b [SOL Text] The student will investigate and understand the major components of soil, its origin, and importance to plants and animals including humans. Key concepts includeb) topsoil is a natural product of subsoil and bedrock; [Essential Knowledge] Topsoil is the upper soil surface and a natural product of subsoil and bedrock. Topsoil is best for plant growth. Subsoil and bedrock are layers of soil under the topsoil that are formed over a long period of time by the action of water. Subsoil and bedrock are not as good for growing plants as is topsoil [Key Words] Earth Soil [Marking Period] MP3 [Subject] 
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