There are 7.5 thousand species of apples. In Brazil, the most consumed are fuji and gala.
The crunching noise an apple makes when you bite it is caused by the 'air mattresses' that breaks in the fruit. That happens because 25% of the volume of the fruit is air.
Never peel the fruit for consumption. The skin contains 12 substances that prevent and fight cancer.
Apple trees can live up to 100 years.
The proposal of a man's marriage to his suitor in Ancient Greece was made in an unusual way. The man threw an apple at his desired wife to be, and if she caught it, the request was accepted. Hence, the meaning of the expression "think fast."