Which is true about Africa?
A) Apartheid is the official policy of Africa
B) The Sahara desert forms a cultural barrier in Africa
C) Europe controls most African nations today
D) Africa is governed by the IMF

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.

Earthquake waves that vibrate from side to side and up and down only through solids are known as "seismic waves."hope my answer has you : )

Answersouth

Developed countries will see a decrease in natural resources, because their population will decrease.