Select all of the answers that apply. (one or more answers) which of the following cause volcanic eruptions? a. pressure and heat built up in the magma chamber b. plate tectonics and subduction c. ground swelling and foreshocks d. foreshocks and aftershocks

The answer is A. and B.

Let's look into the options one by one:

A. pressure and heat built up in the magma chamber

This is true as the pressure and heat built up is what cause the magma to be pushed out of the chamber through the vent. The higher temperature it is,the more it expands and the more likely it is to erupt.

B. plate tectonics and subduction

This is also true as volcanicity is caused by plate tectonics such as subduction. When the plate bends, cracks are formed which coul then be filled by magma and cause fissure eruption, afterwards forming volcanoes.

C. ground swelling and foreshocks

These are the consequences of volcanic eruption but not the causes and therefore is not true.

D. foreshocks and aftershocks

These are as well the consequences of volcanic activity like above and is not true.

Therefore the answers are A. and B.

Hope it helps!

Water flows along the east coast and across the western tropical pacific towards south america, while they both are directed towards that way,  el niño does not directly affect the southern flow of water along the coast. 

Answerseafloor spreading;