Answer:
I am the red tongue of the earth, that buries cities.
Dry though I may be, I am still a sea.
I'm the source of all emotion, but I'm caged in a white prison.
Some adults still use these to count.
Passed from father to son and shared between brothers, its importance is unquestioned though it is used more by others.
What is big and yellow and comes in the morning, to brighten mom's day?
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?