They are examples of hormones
Standing committees in Congress are legislative panels present in the upper and lower houses. They are responsible for considering, approving, and authorizing government operations. Examples are Appropriations Committees and Budget Committees.
Answer:

The social boycott is the act of persistently avoiding a person by other members of the society. It is society's collective refusal to engage a person in the normal social and commercial relations. Its goal is to make that individual so uncomfortable that he decides to voluntarily leave the society
Explanation:

Answer:A-An unknown person claiming to be a maintenance worker who has no tools or equipment and is dressed inappropriately.
Explanation:
For surveillance one should properly adopt the character in order to avoid the doubt of people. Here the person is claiming to be a maintenance worker but he has no tools or equipment and is dressed inappropriately. This can create a feeling of suspicion among the people whom he had interacted in order to get the information about the culprit.