I would say A.) The students grace, because if you're not very graceful, then you're more likely to stumble or lumber around. I hope that makes sense.
The answer is letter b, under nine years of age. It is because children who are nine and below tend to be really playful and if they are not seated on the approved child seat, they would likely do things that could cause them harm if the car is ever caught up in an accident or in some conditions. It is best to put them in an approved child seat for their own safety.
Activation of the <u>Serotonin </u>neurons of the forebrain would be expected to <u>suppress </u>aggressive attack.
Numerous studies link elevated impulsive and aggressive behaviors with reduced serotonin metabolites. The opposing association has been substantiated by therapies targeted at directly reducing serotonin cell activity, despite the fact that pharmaceutical reduction of serotonin is linked to an increase in aggression.
Furthermore, it is unclear whether any of the relationships observed may be caused by changed serotonin activity during development. Here, we used two Pharmacogenetic techniques to selectively and reversibly decrease the firing of serotonin neurons in behaving animals in transgenic mice.
A persistent reduction in serotonin neuron firing was linked to increased aggression, as demonstrated by conditional over expression of the serotonin 1A receptor (Htr1a) in serotonin neurons.
To learn more about Serotonin here
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search in google and u will get ur ans wer cuz we donk know
North Africa had natural resources needed by European countries