| http://www.w3.org/ns/prov#value | - material pressing together and forming over time ??? ??? ??? oxygen is a gas ??? ??? ??? soil is important to animal life because it supports plant life which is essential in the food chain ??? ??? ??? soil can be lost to erosion by animals that eat all of the plants ??? ??? ??? topsoil can be preserved by planting trees and other plants Please allow access to your computer???s microphone to use V
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