it's homogeneous
A mushroom is heterogeneous because it is made up of different parts such as cap, stem, and gills. Each part has its own unique structure and function, making it a heterogeneous organism.
Hand tight
Gas Cap is not on tight, or the seal leaks and you need to replace the cap.
Yes - if the cap is not tight.
because you put the cap on to tight
To open a tight bottle cap, you can try using a rubber band for better grip, running the cap under hot water to expand it, or using a bottle opener or a towel for extra leverage.
The cap should always be installed tight, that is the way the cooling system is designed to work.
When you hear clicks it's tight enough.
Check for a torn seal on the cap, look for cracked or disconnected hoses around the tank and engine.
the metal cap will expand , and it will be easier to remove the cap from the bottle
PO447 indicated a leak in the EVAP emissions system. First thing to do is check to make sure the gas cap is tight. Also check the seal on the cap. If that is good and the cap is tight then you have a problem somewhere with the hoses or the purge valve.
The heat expands the metal.