FROM LITTLE THINGS BIG THINGS GROW
What is an Onion ?
An onion is a root vegetable
How does a Onion make you cry
When you cut an onion, you break cells, releasing their contents. Amino acid sulfoxides form sulfenic acids. Enzymes that were kept separate now are free to mix with the sulfenic acids to produce propanethiol S-oxide, a volatile sulfur compound that wafts upward toward your eyes.
What does a Onion need to grow ?
Onions need water and nitrogen to grow.