The answer is empathy.
Empathy is the ability to share the feelings of others and enable us to act in a positive manner towards those who are suffering/are vulnerable.
Answer: A neurochemical memory trace disintegrates over time
Forgetting from the short term memory is best explained by the trace decay theory. This theory believes that the memory leaves a trace in the nervous system. It can be a physical or chemical trace however, the trace fades away in just a matter of time.
The term uses is subjective social well-being.
Linguistic diversity is sometimes a specific measure of the density of language, or concentration of unique languages together. This diversity covers varied types of traits including language family, grammar, and vocabulary.