Kasvillisuus ja maannosNettilähteitä: Discovering Physical Geography (Flash- animaatioita): Regional Pedogenic Processes Soil Horizon Development By NASA images produced by Reto Stockli and Jesse Allen, using data provided by the MODIS Land Science Team. Caption by Michon Scott. [Public domain], via Wikimedia Commons By NASA images produced by Reto Stockli and Jesse Allen, using data provided by the MODIS Land Science Team. Caption by Michon Scott. [Public domain], via Wikimedia Commons By NASA images produced by Reto Stockli and Jesse Allen, using data provided by the MODIS Land Science Team. Caption by Michon Scott. [Public domain], via Wikimedia Commons By NASA images produced by Reto Stockli and Jesse Allen, using data provided by the MODIS Land Science Team. Caption by Michon Scott. [Public domain], via Wikimedia Commons By NASA images produced by Reto Stockli and Jesse Allen, using data provided by the MODIS Land Science Team. Caption by Michon Scott. [Public domain], via Wikimedia Commons By NASA images produced by Reto Stockli and Jesse Allen, using data provided by the MODIS Land Science Team. Caption by Michon Scott. [Public domain], via Wikimedia Commons GE1 Sininen planeettaAarne Hagman; Kurssin rikastusmateriaalia 20136.8.2013