Ssris alleviate symptoms of depression by increasing the a. frequency at which serotonin is released from synaptic vesicles b. number of serotonin receptors at the synapse c. level of serotonin at the synapse d. synthesis of serotonin

Ssris alleviate symptoms of depression by increasing the level of serotonin at the synapse .

Option C

Explanation:

Ssris (Selective serotonin re-uptake inhibitor) is a drug that is been prescribed to the people with depression and anxiety disorders.  In the brain the information and messages are passed from one nerve cell to the other.  

People with disorders find difficulty in transmitting the information. Hence a drug like SSRI's are prescribed to increase the level of serotonin at the synapse as the nerve cell passes the information through synapse the small gap between the cells.

mountains can affect the climate of nearby lands. in some areas, mountains block rain, so that one side of a mountain range may be rainy and the other side may be a desert. much of airborne moisture falls as rain on the windward side of mountains.

explanation:

sodium i think the chemical element of atomic number 11, a soft silver-white reactive metal of the alkali metal group.