In one of its definitions of 'will', Cambridge Dictionary(Cambridge Dictionary | English Dictionary, Translations & Thesaurus) says:
will is used when referring to something that always or usually happens, and then it gives a good number of examples.
Now consider these two sentences, please:
a) Fruit will keep longer in the fridge.
b) Fruit keeps longer in the fridge.
My questions are:
1) What is the difference between a) and b)? Why 'will' in a)?
2) Can I put can and may in the place of will in a)?
3) I don't think we could replace will with could or might in a). Am I right?