If the dark energy is described by the cosmological constant, then the universe is
a.
open; , decelerating and will expand forever
b.
flat; accelerating and will expand forever
c.
closed; accelerating and will expand forever
d.
open; accelerating and will not expand forever
e.
flat; decelerating and will expand forever

Answer. first blank ; ; ; clockwise; the second blank; ///clockwise;

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.

What are the choices