I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?

How can one talk without saying a single word?

He loves to dance, twist and prance, he shakes his tail, and as a way he sails, wingless he flies into the sky. What is he?

I look flat, but I am deep. Hidden realms I shelter. Lives I take, but the food I offer. At times I am beautiful. I can be calm, angry, and turbulent. I have no heart but offer pleasure as well as death. No man can own me, yet I encompass what all men must have. What am I?

Replace the letters of words with a number so that the below equation holds true

BASE +
BALL
---------
GAMES
----------

When I go in I might cause pain. I cause you to spit and ask you not to swallow. I can fill your hole. What am I?

How many times can you subtract the number 5 from 25?

There are three boxes of different sizes with three cupcakes inside each of the boxes in Christina's kitchen. At night her daughter wakes up and goes to the kitchen. She opens a box and eats all three cakes.

But in the morning Christina finds out that each box still had three cupcakes. How?

1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10

I cannot talk, but I always reply when spoken to. What am I?