18.   Which of the following is a factor that determines the composition of magma? 

A. Texture
B. Elasticity
C. Color
D. Viscosity 

D or B?

4 answers

Probably D.
20.   A flat area on a mountain is known as a 

A. plateau.
B. grand valley.
C. valley straight.
D. rising canyon.

A.plateau?
Right.
Thank-you,that was all I needed for today!Happy Valentines Day!
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