The place, or zone, where one plate descends under another plate ...

[Zoey63294]

The place, or zone, where one plate descends under another plate and into the asthenosphere is called a(n) ______________ zone.
 Fill in the blank(s) with correct word

Question 2

Use the periodic table to find the atomic number, number of protons, number of electrons, and number of valence electrons for each of the following elements.
 a. barium
  b. tin
  c. phosphorus

[Dunkey]

Answer to Question 1

subduction

Answer to Question 2

a . 56, 56, 56, 2
b. 50, 50, 50, 4
c. 15, 15, 15, 5