Soil formation involves both

a. decaying and erosion of rocks
b. decomposition and crystallization of rocks
c. chemical weathering and erosion of rocks
d. physical and chemical weathering of rocks

Soil formation involves both C) chemical weathering and erosion of rocks. 

Migration people get up and go cause they feel it is best for them 

The war began as a fight between mayans and the landowners of the country. the main causes of the guatemalan civil war was started by the greed of the united fruit company, the fear of communism, and the racism toward the  mayan  people.