a) Discuss the internal and composition of the earth. Make sure to discuss on
types of crusts.
b) Discuss soil formations
The internal composition of the earth constitutes of mass, continental crust and oceanic crust. Mantle takes about 68% of the mass while the core is formed by iron metal and it takes 31% of the earth. On the other hand, soil formation happens with the support of decomposing plants and animals that enhance the soil's fertility.