Magma is molten material that forms anywhere that weathering takes place when sediment is moved and deposited on earth’s surface deep beneath earth’s surface

The correct answer is:

deep beneath earth’s surface.

Step-by-step explanation:

Magma is the molten or semi-molten natural material from which all igneous rocks are formed.( i.e. we could say that Magma is composed of molten rock and is stored in the Earth's crust ).

Magma is found beneath the surface of the Earth.

The evidence of magmatism has also been discovered on other terrestrial planets and some natural satellites.

the value of v.w= -12.

step-by-step explanation:

we are given three vector r,v and w as:

r = < 5, -5, -2> ; v = < 2, -8, -8> ; w = < -2, 6, -5>

we know that r,v and w could also be represented as:

r=5i-5j-2k

v=2i-8j-8k

and w= -2i+6j-5k

where i,j and k are the unit vectors of x,y and z-axis respectively.

also we know that it has the following property:

i.i=1 ; j.j=1; k.k=1

and i.=j.i=i.k=k.i=j.k=k.j=0

i.e. when we multiply two vectors or we find it's dot product we need to only multiply the components of x coordinates with each other; y with each other and z with each other.

hence, v.w= (2i-8j- -2i+6j-5k)

                  = 2×(-2)+(-8)×(6)+(-8)×(-5)

                  = -4-48+40

                  = -12

hence, v.w= -12