In the desert environment, the chemical weathering of rocks is generally reduced because
a. rocks are very scarce in deserts. b. most rocks are buried deep within the soil. c. moisture is lacking and organic acids are scarce. d. the soil is so well developed.

I think the correct answer among the choices presented above is option C. In the desert environment, the chemical weathering of rocks is generally reduced because moisture is lacking and organic acids are scarce which are the cause of chemical weathering. 

Answeroil-shale;

Magma forms by partial melting of upper mantle and crust. partial melt means that only a fraction of the available material forms a melt, and that the remainder stays solid. the partial melt rises because of its lower density and ascends through he crust. this is so conclusive mean the answer would be magma igneous rocks or balistic magma.