Personality is:. 1. the unpredictable actions of individuals that are typical of most people at least some of the time.
2. a collection of characteristics that defines how a person behaves in different situations.
3. a manner of acting characterized by uniqueness and appeal.
4. the part of a person that is exhibited when in the presence of others.

2. a collection of characteristics that defines how a person behaves in different situations.

Explanation:

Personality is defined as the collection of behaviours, emotional attitudes, and interests, that a person displays in daily situations. Personality is very complex, and is in part a result of genetic factors, and in part a result of the enviroment in which the person lives.

i believe

clean air is essential for health and survival

clean air provides nitrogen gas for plant respiration

clean air supplies oxygen that enables living organisms to breathe

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answer; the three types of research;