Add spaces: Dependingonthealtitude,theairhasadifferentdensityandadifferentchemicalcomposition.

Answer: Depending on the altitude, the air has a different density and a different chemical composition.

Add spaces: TheHousehasabathroomwithshowerandwashingmachine,aswellasaguesttoiletinthelivingroom.

Answer: The House has a bathroom with shower and washing machine, as well as a guest toilet in the living room.

Add spaces: Dedal1RacethePCplayertorununtiltheendofthemazeandenterthenextlevel

Answer:
Dedal 1 Race the PC player to run until the end of the maze and enter the next level