Scientists suggest that two energy sources, __________ and __________, broke the bonds in the gases in Earth's primitive atmosphere, releasing atoms to form __________.
No problem! I can help you with that. The missing terms are typically mentioned in the context of the origin of life on Earth. The two energy sources that scientists suggest broke the bonds in Earth's primitive atmosphere are lightning and UV radiation. These energy sources were thought to have played a significant role in the chemical reactions that took place during that time. The released atoms from these reactions formed simple molecules, such as amino acids, which are the building blocks of life.
