Question

what in the crucial geochemical elements to have life in other planets?

Answer 1

In order to sustain life, it is most important to have a series of self-replicating biomolecules so that the continuity of life could be maintained. Our current biological knowledge states that DNA, RNA, proteins, fats and carbohydrates etc remain these essential biomolecules. In order to establish this fact, some specific geochemical elements are necessary to exist on any planet. Thus, the necessary elements that should always be present are:

1. Carbon
2. Hydrogen
3. Nitrogen
4. Oxygen
5. Sulphur
6. Sodium
7. Potassium
8. Chlorine
9. Nickel
10. Cadmium

These represent some of the essentially required elements on the geochemical environment in order to sustain life. Together, these elements could construct not only life-supporting biomolecules, but also includ life-supporting molecules such aa water, oxygen, carbon dioxide etc.