yes, fruit should only be eaten at room temperature. Refrigerate at a low temp. until it is ready to be eaten, take out of fridge a good hour before consuming. Do not refrigerate bananas, they will turn ugly, also do not store apples near milk, it will turn the milk.
depends what kind of fruit
no its more acidy.
some fruits will be sweeter if the water is salty
If you have a sweet tooth, fruit is sweeter then veggies.
usually the outside of a homegrown fruit is sweet and the inside bitter, because the sun can only get to ripen the out side. but if a parrot picks at the fruit then the sun will have a chance to get inside the fruit and so mabey yes, a parrot can make the fruit sweeter.
about a week
berries
A PBJ sandwich can stay unrefrigerated for about 2 hours before it becomes unsafe to eat due to the risk of bacteria growth.
Two hours.
3 Months
Brandy is generally sweeter than whiskey because it is made from fruit, while whiskey is made from grains.
Splenda is just a fake sugar product. Therefore it still makes things taste sweeter, so yes, you can put it on fruit, or anything else for that matter, to make it sweeter.