Short answer question 1) imagine that a body of rock with a mafic chemical composition undergoes partial melting to produce a melt. out of the four general categories of igneous chemical compositions (ultramafic, mafic, intermediate, and felsic), what is the likely composition of the new melt? explain your reasoning

Answer decreased soil salinity;

Answerwill have thinner; have thicker oceanic sediments;

Humans have survived and thrived in mexico city by using technology to create greater access to land. when the spanish conquered the aztec capital, tenochtitlan, in the 16th century, they built mexico city by draining the lakes and filling in the lake water to create more arable land for agriculture. this technique of land reclamation has continued to be fundamental to human civilization in mexico city. 

D. a mountain abd are made by volcanos and tectonic plates