Which type of magma would you expect to produce the most explosive volcanic eruption?

a) high percentage of silica (sio2) with low gas content

b) high pressure of silica (sio2) with high gas content

c) low percentage of silica (sio2) with high gas content

d) low percentage of silica (sio2) with low gas content

How do you think earths interior affects what is happening on the surface? 2. how do fossils support the continental drift hypothesis? 3. how does sea- floor spreading support the hypothesis of continental drift? 4.what do scientists observe when they studied the magnetic fields of rocks on the sides of mid-ocean ridges? 5. what is a tectonic plate ? 6. explain mantle convection 7.how can movements of the continents affect earths climate? 8. what occurs during drifting?