*will mark as brainliest* what substance could be represented by the letter x in the diagram below?

Carbohydrates.

Carbon dioxide, water and ozone are not organic compounds. In fact, these are compounds from where many organisms get their basic atoms mentioned in the picture (Carbon, Hydrogen, Oxygen and Nitrogen). Carbon dioxide is usually where, for example, plants get their Carbon from.

Carbohydrates are organic compounds and are one of the macronutrients in our diet, next to proteins and fats. DNA is also as organic compound and is the very basis of all the genetic information in living organisms.