To act as a catalyst in chemical reactions
Elliptical galaxies. I hope thats correct.
Francesco Redi was the first scientist to disprove and challenge the spontaneous generation theory. He experimented on how flies distributed their eggs on the meat which caused flies to arose. Thank you for your question. Please don't hesitate to ask in Brainly your queries.
Oxygen-16 and Carbon-12 are stableisotopes of elements O and C respectively. Hence, they do not have half-lives. But Carbon-14 andUranium-238 are radioactive isotopes. Among them Carbon-14 has relatively short half-life as about 5730 years while Uranium-238 has a long half-life as about 4.5 billion years.
Answer is. uranium-238
Answer:
Una respuesta es una contestación a alguien que nos llama o nos requiere
Explanation:
