Here's why:

* Everything is made of molecules: Everything in the physical world, from the air we breathe to the chair you're sitting on, is made up of molecules. Molecules are the tiny building blocks of matter.

* Seed components: Seeds are composed of various substances:

* Water: Water is a molecule made up of hydrogen and oxygen atoms.

* Carbohydrates: Seeds store energy in the form of carbohydrates like starch. Carbohydrates are made up of carbon, hydrogen, and oxygen atoms.

* Proteins: Seeds contain proteins for growth and development. Proteins are large molecules made up of chains of amino acids.

* Lipids (fats): Some seeds store lipids, which are also molecules.

* Other molecules: Seeds also contain DNA, RNA, and other essential molecules for life.

Therefore, a seed is a complex and organized structure that is ultimately composed of numerous different types of molecules.