It never 'scans' for LAN worlds because it's not accessing anything outside of your own personal network. It's your LAN, you should already know what's being run on it.
On alpha worlds, block changes only take place on newly generated chunks.
Kittens don't grow in minecraft
a few minecraft days
A full body PET scan can take 30 to 45 minutes. A scan of a single lamp or a single organ can take as little as 10 minutes.
It would depend on the item and the seller
As big as you can take it
It should usually take about 24 hours.
it doesnt
4000000 years
It should usually take about 24 hours.
It depends on your health and how long it would take for you to get down.
48 hours