What happens when the action potential reaches the end of the axon at the axon
terminal? how does one neuron communicate with another neuron and complete
the circuit?

ya the other dude is right

above statement is not a true statement about the open ocean because the open ocean has low levels of nutrients. most of the photosynthetic activity on earth occurs in the open ocean within the photic zone. organisms in the deep ocean are exposed to frigid temperatures and total darkness but it does not begin at the low-tide mark.