David regularly takes a pain reliever for his back pain. after a few weeks, he notices that he needs to increase the amount of pain-relieving drug that he takes each day in order to achieve the same level of pain relief. the phenomenon that david is experiencing is called:

a fact or situation that is observed to exist or happen, especially one whose cause or explanation is in question.

Explanation:

Worthy examples may be the Aurora Borealis, the prowess of Michael Jordan, or the abilities of any given Marvel character blessed by exposure to radioactive materials.

no

explanation:

your too far away.

d yoga because yoga makes your bones very strong