List the products of cellular respiration

What causes the force that pushes magma from the magma chamber through the pipe and vent of a volcano?

The table shows dates and appearance of index fossils. which rock layers can be dated most precisely? a) a layer containing both a fossil 4 and a fossil 3 b) a layer containing both a fossil 2 and a fossil 3 c) a layer containing both a fossil 1 and a fossil 4 d) a layer containing both a fossil 1 and a fossil 2

Idon’t know the answer and i’ve been stuck on it for a while now skskskskks