Sagot :
Answer:
It appears that the most plausible origin is nucleosynthesis in the big bang for the lighter ones, and spallation induced by galactic cosmic rays in interstellar space for the heavier ones. abundances or their physical states.
Answer:
It appears that the most plausible origin is nucleosynthesis in the big bang for the lighter ones, and spallation induced by galactic cosmic rays in interstellar space for the heavier ones. abundances or their physical states.