Final answer:
The four main elements that make up all living things are carbon, hydrogen, oxygen, and nitrogen.
Step-by-step explanation:
The four main elements that make up all living things are carbon (C), hydrogen (H), oxygen (O), and nitrogen (N).
These elements are essential for life because they are the building blocks of organic compounds such as proteins, carbohydrates, lipids, and nucleic acids. Carbon forms the backbone of these organic compounds, while hydrogen and oxygen are important for forming water and providing energy. Nitrogen is a key component of proteins and nucleic acids.
For example, proteins are made up of amino acids, which contain carbon, hydrogen, oxygen, and nitrogen. Carbohydrates such as glucose also consist of carbon, hydrogen, and oxygen atoms.
Learn more about Living things and the elements they are made up of