Objective 4 - Earth/Space                                              

5.12A- Interpret how land forms are the result of a combination of constructive and destructive forces such as deposition of sediment and weathering.

The prairie is ideal for the growth of grasses
because it has rich topsoil. All of these
processes help form topsoil EXCEPT —

F decay of trees
G weathering of rocks
H erosion of hills
J movement of oceansNot tested in three years.