Here's why:

* Organic compounds are defined as compounds containing carbon and hydrogen, usually with other elements like oxygen, nitrogen, and sulfur. Examples include carbohydrates, proteins, fats, and DNA.

* Inorganic compounds are all other compounds that don't fit the definition of organic compounds. While many inorganic compounds do not contain carbon, there are exceptions.

Examples of inorganic compounds containing carbon:

* Carbon dioxide (CO2) is a vital greenhouse gas in the atmosphere.

* Carbon monoxide (CO) is a poisonous gas.

* Calcium carbonate (CaCO3) is the main component of limestone and seashells.

* Sodium bicarbonate (NaHCO3) is baking soda.

So, the presence of carbon alone doesn't automatically classify a compound as organic. The presence of carbon-hydrogen bonds is key to defining organic compounds.