Which is currently the deepest known point on Earth's ocean floor?

Mariana Trench

What is the name of the massive black dog belonging to Rubeus Hagrid in the "Harry Potter" series? In the game 'Among Us', players perform which roles? The capital city of Libya is? What mountain range largely separates India from the Tibetan Plateau? What indie game involves battling monsters and befriending them underground as a child protagonist?