The importance of water, carbon, nitrogen, and phophorus for the living being and environmemt is huge, they are molecules essencial for the living process such as:
- Being part of the biogeochemical cycles;
- Being key nutrients for living organism, because they are part of the composition of biomolecules as proteins, nucleic acids, and carbohydrates;
- They are finite so being part of organic and inorganic process is a must.
Therefore, all alternatives are true about how important these molecules are to the life on Earth.