not fair at all but this is an opinionated question u literelly shouldnt be able to get it wrong
Early civilizations always formed near rivers/river deltas. Rivers provide water, silt (fertile soil) which is good for farming, and transportation, as well as natural barriers (such as the cataracts-rapids-in the Nile) which protected the Egyptians from invasions/attacks. The Nile is also predictable in it's seasonal flooding (compared to other early civilizations' rivers), which was good for the Egyptians.
(All of those factors influenced the development of the Egyptian civilization.)
Answer: c. This is not plagiarism
Explanation: Plagiarism is the act of using someone else's words or ideas as though they were yours. When using someone else's words or idea, put them in quotation to show that you are only borrowing the statement from another person. Also the source should be acknowledge. In this case, the student quoted DBR and the statement was in quotation to show that it wasn't his own words or idea, that is not plagiarism.
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>
