How are well developed soils similar to young soils? How are they different?

Please help... i don't knoiw anything about it. pleae don't ask me to refer to my book... i don't have it with me...i googled it but i don't get any specific answer....plz help

2 answers

Check these sites carefully.

http://plantandsoil.unl.edu/croptechnology2005/soil_sci/?what=topicsD&informationModuleId=1130447038&topicOrder=2&max=10&min=0&

http://www.uwgb.edu/dutchs/EarthSC202Notes/ROCKCYCL.HTM
Juts ka