LOGIC necessary or sufficient?

Being an animal is a ___ condition for being a tiger.

necessary

Having a racket is a ___ condition for playing tennis.

necessary

Heating water is a ___ condition for brewing coffee.

necessary

Paying attention is a ___ condition for understanding a lecture.

necessary

Uttering a falsehood is a ___ condition for telling a lie.

necessary

Being a tiger is a ___ condition for being an animal.

sufficient

Being exactly divisible by 4 is a ___ condition for a number being even..

sufficient

Burning leaves is a ___ condition for producing smoke.

sufficient

Drinking a glass of water is a ___ condition for quenching one's thirst.

sufficient

Stepping on a cat's tail is a ___ condition for making the cat yowl.

sufficient