Which phrase best describes subduction?

a.
sinking of one tectonic plate under another

b.
movements of tectonic plates across the earth's surface

c.
collision between two tectonic plates

d.
spreading apart of two tectonic plates

Volcanic irruption is most likely to be violent when a) volcanoes near to the sea b) the neck of the volcano is sealed by a plug c) the lava is viscous d) the lava reaches the surface through a fissure e) the volcano is on the ocean floor

The earth's internal process which drives seafloor spreading is

What does the kyoto protocol aim to reduce