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

How can you approximate the number of calories required to keep you in energy balance?

The unique structure of the neuron is dedicated to the efficient and rapid transmission of neural signals. the relationship between neurons, the spinal cord, and the brain constitutes an elaborate communication system throughout the human body. all but one of the functions listed below are a result of this interaction.