.
Igneous
Sedimentary
Metamorphic
Fossils
Sand
Silt
Clay
Humus
Bedrock
Subsoil
Parent rock
Topsoil
Oil
Water
Coal
Natural gas
Litter
Pollute
Recycle
Contaminate
Silver
Minerals from the earth
Oil
Energy from the sun
Rocks
Natural resources
Pollutants
Energy
Coal
Solar
Wind
Geothermal