Which of the following is true about the elements present in a sample of earth's crust and living tissue?

Which of the following is true about the elements present in a sample of earth's crust and living tissue?
  1. All the elements in living tissue are not present in earth's crust
  2. The relative abundance of carbon and hydrogen is higher in earth's crust than in living tissue
  3. The elements present in both earth's crust and living tissue have the same relative abundance of carbon and hydrogen
  4. The relative abundance of carbon and hydrogen is higher in living tissue than in earth's crust

Solution

A closer examination reveals that the relative abundance of carbon and hydrogen with respect to other elements is higher in any living organism than in earth's crust.

Asked in: NCERT

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