Sounds like you may have a bad selector switch or you may want to check the vaccum hoses in the engine compartment.
Most likely a bad or disconnected vacuum hose to the defrost/floor selector in the heater ducting.
its the sport button for higher revs
Yes vents can be in the floor instead of the wall.
in front of the gas tank, drivers side, bolted to the floor.
In the trunk under the floor mat by the spare tire
The cat may choose to sleep on the floor instead of the bed because it finds the floor more comfortable, cooler, or simply prefers that spot for sleeping.
The ocean floor is matter, and so is everything else around it. Everything is made of matter.
They wouldn't. You have a problem, and it's hazardous to your health.
windsheild leaks
If this is a pick up truck, check the shift selector cable for rot damage under the drivers side floor mats.
shud b in the trunk part under the floor, shud see a lever to haul the floor up
the battery is under the floor in the trunk where the spare tire is located