Which of the following is living and which is non living? give reasons for each answer . A. engine in a car
B. seed
C. robot
D. chair​

A seed is living

Everything else is non-living

Seed turns into a plant (Plants are in fact living)

Engine in a car is non - living because it's obviously not living and can't breathe or talk to you. A chair is an object, cannot breathe, produce food, and talk. A Robot is not living. its an AI (Artificial intelligence) that is programmed for working, helping, and building etc.  

answer: "circumcision is a common procedure in which the skin covering the tip of the penis is surgically removed."