What term refers to the total amount of a good or service that is available for purchase?

demand
supply
scarcity
opportunity cost

3. define historiography. has historiography changed over time or stayed the same? why is this distinction important? use complete sentences for your response. (4 points)

Small plane just crashed in your neighborhood. you take a fire extinguisher and blankets to the scene, then stand back and silently gather with others on the scene when you realize there is nothing you can do to . in this situation, gathering quietly with others out of reverence and respect is an example of coping.

Which organelle is marked with an x?