Question

How can one apple spoil the other

Answer 1

Answer:

Yes. As they ripen, some fruits, like apples and pears, produce a gaseous hormone called ethylene, which is, among other things, a ripening agent. When you store fruits together, the ethylene each piece emits prods the others around it to ripen further, and vice versa.

Answer 2

Apples turn brown because of a chemical reaction called "oxidation", which is caused by oxygen from the air. Oxygen is one of the most reactive chemicals known, and there are many kinds of oxidation reactions. ... The fridge does not stop chemical reactions, so bacteria will still rot the food eventually.