The four elements that make up approximately 96% of living matter are Carbon, Hydrogen, Oxygen, and Nitrogen.
There are approximately 92 naturally occurring elements and most of them occur in living cells.
Of these approximately 20-25% are essential to life.
A pie chart is shown in the adjoining image, which depicts the composition of the elements present inside the living cells.
It is visible from the pie chart that the majority (almost 96-98%) is of 4 elements i.e, carbon, hydrogen, oxygen, nitrogen and the remaining is of calcium and phosphorus.
Thus, the four elements that make up approximately 96% of living matter are Carbon, Hydrogen, Oxygen, and Nitrogen.
To know more about "composition of elements in living cells", refer to the link given below:
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