Answer:
Without this, H2O would just be 2O
I am the yellow hem of the sea's blue skirt.
I know a word of letters three, add two and less there will be.
Hot tempered and sometimes it blows its top, making a mess of everything.
What sevenletter word becomes longer when the third letter is removed?
This crisp stick-shaped roll is often enjoyed with soup or marinara sauce.
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?