1. Which factors from the word bank would be reasons that might cause large scale migrations of people from one place to another? (highlight all that apply)
(Word Bank. Lack of Technology--Drought (lack of rain/water)-- Moderate
Climate--Political Conflict--Unstable Government--Famine(lack of food)--Strong
Economy]

Answerair masses develop near the equator are warm; tropical air mass

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.

The correct answer is:   [b]:   "has no atmosphere" .