No, you cannot ruin the refrigerator by opening and closing the door or by leaving the door open for a few minutes.
Refrigerators do have a lifespan for the number of times the doors can be opened and closed before a hinge breaks or the seal is damaged, but this cycle can be in the millions - so it won't be affected with normal use. Each time you open and close the refrigerator, some cool air escapes and can mean that the compressor will have to run to get temperature back to where it should be.
Leaving the door open for a few minutes does cool off the interior and things inside will begin to cool off as well. This will result in the refrigerator compressor having to run to get the temperature back down.
A good refrigerator is designed to have the compressor go through these cycles many thousands of times. The only reason someone may be concerned with having the refrigerator work more would be the electric bill (it goes up, refrigerator compressors use a lot of power) or the refrigerator compressor has had problems previously.
It can but dont leave your fridge open for too long!
If you have noticed the warm air blowing from behind your refrigerator, that is the heat that was in the air that is inside your refrigerator. If you leave the door open the air around the refrigerator will briefly feel cold, but it will warm back up and the food in the refrigerator will go bad.
The opening and closing of the Stomata allows for water vapor and other gases to come into or out of leave.
If you have a refrigerator or a cooler by all means "Go for it", I do it all the time.
the anus is the opening through which feces leave the body
Plants have pores on the underside of the leave called stomata (or stoma in singular). By opening or closing these pores, they allow the oxygen formed inside the plant to exit, and the carbon dioxide outside to enter.
24hrs
no
Of course you can. Most people leave their refrigerators plugged in for years. It's actually quite rare for someone to unplug their refrigerator.
I always leave it uncovered and it taste fine.
This is not a good idea. Cans are metal and can leave a bad taste on food if the food stays in the can after opening. Place foods in an air tight container and place the food in the refrigerator for storage.
This is not a good idea. Cans are metal and can leave a bad taste on food if the food stays in the can after opening. Place foods in an air tight container and place the food in the refrigerator for storage.