The obligation to contribute to the overall well-being of a community is called conservation free market opportunity cost social responsibility

explanation:

pay attention. give the speaker your undivided attention, and acknowledge the message.

show that you're listening. use your own body language and gestures to show that you are engaged.

provide feedback.

defer judgment.

respond appropriately.

the use of electrical signals that transit messages is know as

answer; have joints that fail from excess by early the accumulated effects of unnoticed infections,all of these things are possible for a person born without the ability to feel pain;

answer; rhythm test;