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?

answer; i believe the correct answer is ( proteins );

i think the answer is 95 hope this

the nitrogen cycle provides nitrogen to the ecosystem from the atmosphere, ground and oceans. nitrogen is an important component of complex molecules such as amino acids and nucleotides, which lead to the creation of proteins and dna, the building blocks of all life. plants absorb nitrogen in the form of ammonium, nitrate ion and, on rare occasions, as amino acids. animals receive nitrogen necessary for biological processes from feeding on living or dead organic matter.