Where do Madara and Nagato get the rinnengans and sharingans, for example when madara gave the reanimated jinchuriki a sharingan and a rinnengan. And how nagato gave tendo or yahiko the rinnengan?

Suppose that you are in a room with 3 doors and a crack in the ceiling for light. that is all. the doors each have a sign on them that says what there is behind them. door #1. a pool of corrosive acid. door #2. a crocodile that hasn't eaten in 8 months. door #3. a solar "oven". a giant lens that focuses all the sunlight at the entrance of the door. you must choose a door, which door do you choose?

What is the angular extent of an image captured by a camera called?

Any surface such as a table, cutting board, or a piece of equipment that comes in contact with food is considered what