The tunnels were sealed to protect the Pharaoh's burial chamber from tomb robbers and looters. It was believed that sealing the chambers would prevent grave robbers from stealing the pharaoh's belongings and desecrating the tomb.
So that nobody could find the entrance and rob the chamber. They were sealed after the pharaoh's funeral.
"Interred" would be a better word than "buried", and the answer depends upon the dynasty. But almost all pharaohs had their brains and intestines removed and placed in canisters, which were then sealed in the burial chamber along with their mummified (embalmed) corpses. Objects and tools the pharaohs had found useful in life were often sealed in these burial chambers, and sometimes, favored wives, servants, and pets were buried with the pharaoh, too.
no
theres three seald chambers in the hoen regone each one has one of the regies in it.
They would literally seal the entrance by covering up the hole with blocks.
In the Sealed Chamber, there are multiple braille clues for you to uncover. These clues tell you how to get into the Chambers of Regirock, Registeel, and Regice, respectively.
Most dead pharaohs were placed in tombs which were then sealed. There is very little evidence that they were buried in pyramids (which is a common miss-belief).
They would (tightly) pack people into a sealed room and then inject the gas.
people were put into a room, the room was sealed, the gas was put in, the people died. The specifics of how the rooms were sealed and the gas was put in differed, but the principle was the same.
A (sealed / air and watertight) burial vault or an (unsealed /non-protective) grave box.
Strictly between a variety of pickled hams that are stowed in sealed chambers across the globe.
a room would be sealed, the gas would be put in, the people would die.