Meaning of Numbers on stickers of fruit and vegetables

Meaning of Numbers on stickers of fruit and vegetables.
Chemicals added you weren't told about
4 it's farm grown with pesticides
8 it's GMO
9 it's organic.

Grow your own food
Organic is no longer safe
MCP = 1-methylcyclopropene
Smart Fresh once it gets into your gut, it damages your ability to digest