These elements like carbon, oxygen, nitrogen, etc are called the major elements.
Major elements are those elements that are found more than 1% in the atmosphere. These elements are higher in quantity than the other elements.
These are also known as major elements because they are majorly found in the genetic material of living beings.
It can be said that these are the element by which the living beings are formed. Genetic material like DNA or RNA have these materials and are abundant in the body.
They are also known as CHON elements in short.
Hence, with all that we can conclude that these elements are the major elements.
To know more about major elements, refer: https://brainly.com/question/28502889
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