Which two elements on the periodic table are in the same group

Why is excretion necessary to maintain homeostasis?

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.

The body of water found at number 4 on the map above is the