Two analogies that relate actions with their consequences are given in the form "A : B. C : ?". The phrase "A : B" relates action A to consequence B. Your task is to replace the question mark (?) with the appropriate consquence of the given action C, following the "A : B" relation. Your answer should be a single verb, without further explanation.

Q: drop : fall. ignite : ?

A: burn
****
Q: throw : fly. ignite : ?

A: burn
****
Q: kill : die. nourish : ?

A:
grow
****