As magma rises toward the surface, What happens to the pressure on it and what escapes from the magma at Mammoth Mountain next to the Long Valley caldera in California?
1) The pressure on the magma increases and COâ‚‚ escapes
2) The pressure on the magma decreases and COâ‚‚ escapes
3) The pressure on the magma increases and water escapes
4) The pressure on the magma decreases and water escapes
