plays a role in dreaming and in controlling emotional states, such as, anger, anxiety, and depression.

serotonin  

Explanation:

Serotonin is one of the most-studied neurotransmitters since it is believed to be in charge of controlling mood states and feelings of anxiety, anger, and sadness.

The practice of exercising regularly helps to release serotonin to a level that it promotes a "happy" mood, and makes falling in depression a less likely possibility.

It is importat to know however that a great level of serotonin is also related to having anxiety. So there is always another set of neurotransmitters that work together to combine in regulating inner states. Within the pineal gland, serotonin is produced along melatonin and many other neurotransmitters.

not  

cuba  

russia  

iraq  

el salvador  

explanation:

known as the land of volcanoes, el salvador has visit seismic tremors and volcanic movement. it is the main nation in central america that does not have a coastline on the caribbean sea. about portion of all salvadorans live in the wide open. they are poor and don't have power or running water in their homes. in 1525, pedro de alvarado, a lieutenant of cortés's, vanquished el salvador. el salvador, with alternate nations of central america, pronounced its freedom from spain on sept. 15, 1821, and was a piece of a league of central american states until the point when that association broke up in 1838.

answer; love and belonging needs;