storing food properly

Do you really know how long we can keep the foods in the refrigerator?
The freezer compartment helps keep food longer, but it doesn't matter how long it takes to keep food in the freezer.
Fruits and vegetables cannot be stored together
The obvious fact is, a rotten apple will ruin the basket of apples. However, do you know, even a fresh apple when ripe can damage a watermelon stored right next to it?