How do you explain issues such as birth death and marriage to a pre-schooler?

Go to Borders book store children's section
Freddy the leaf is a title of a book for death
Frankley I prefer the stork for birth and Barbar for marriage.
Preschoolers do not understand abstract concepts, it is not developmentally appropriate for threm to do so. DOn't worry about it. They will ask again when they are 8 years old and you can give them all the scientific details you want. good luck joymaker rn