I believe the answer is: Nitric oxide
<span>Nitric oxide could be synthesized on demand, because it is considered to be membrane permeant that cannot be stored. Calcium influx through </span><span>The N-methyl-D-aspartate </span>receptor activates nitric oxide synthase (NOS), which synthesizes Nitric oxide from L-arginine which allow it <span> to act as a retrograde messenger from the dendrite to the terminal button. </span>
I believe the answer is: Integrative theory
Integrative theory view that society could never be exist unless each individuals fulfill their own roles. These happen because humans are unique in terms of our talent/capabilities. So in order to crate a well functioning society, different humans had to integrate our different capability to operate it.
The answer to the question above is letter A. The word encompasses Emerson's philosophical, religious, social and ethical beliefs is nonconformity. Emerson mentioned that "to transcend" society must first be able to look at the past and beyond it. One must follow his/her instinct and not conform to what the society dictates.
Number 3 keeps the planets in orbit.
