Which of the following has had an effect on the ration of various countries?
a-limiting access to birth control
b-a one child policy enforced by the government
c-the green revolution
d-tax deductions for having multiple children
e- expanding access to birth control

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.

answer is. c

Yeah, i guess that checks out because the unused brain is almost like a clean slate or a new car. it has more value than an older already used brain. -thomasnash