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Zykairah 4th grade science

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  • The decayed material in soil.
  • C
  • the layer below the topsoil part of earth crust
  • hot liquid rock within the earth

Zykairah 4th grade science Zykairah 4th grade science Presentation Transcript

  • science
  • Humus• The decayed material in soil
  • Mineral• A nonliving substance in the form of a crystal which is taken form the earth
  • geologistA science tist who studies the earth
  • crystal• The substance with smooth flat surfaces that meet that in a sharp edged and corners
  • gems• a rare valuable minerail
  • topsoilThe upper layer of soil
  • subsoil• the soil beneath the layer of soil
  • bedrock• the layer below the topsoil part of earth crust
  • crust• The solid of rock beneath the soil
  • magma• hot liquid rock within the earth
  • core• The innermost part of earth
  • mantle• The layer of earth beneath the crust