Why is carbon so important for living things

Organic compounds make up the cells and other structures of organisms and carry out life processes. Carbon is the main element in organic compounds, so carbon is essential to life on Earth. Without carbon, life as we know it could not exist.

Explanation:

Carbon is the most important element to living things because it can form many different kinds of bonds and form essential compounds.

the answer is:

carbon dioxide

organ system-an organ system is a group of organs that work together to perform one or more functions. each does a particular job in the body, and is made up of certain tissues.