Answer:
Where humans breathe liquid.
What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?
This is the main ingredient in spaghetti and Mac-N-Cheese.
They can be long or short; they can be grown or bought; they can be painted or left bare; they can be round or square.
Small, containing light, You'll need it in the dark, It will provide that spark, and shine into the night. Will light up any pyre, 'Cause it can help make a fire.
Cycle Cycle Cycle.
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?