The process of physical disintegration and chemical decomposition of rocks on the crust is called ______.
Weathering
Soil erison
Percolation
None of these
Erosion
Retention
Rocks
Minerals
Fossils
Which of the following is the middle layer of earth?
Mantle
Crust
Basalt
Core
Sandy soil
Loamy soil
Clayey soil
Mixture of sand and loam
