Which process most likely enabled the formation of the early protists? photosynthesis endosymbiosis conjugation binary fission

Endosymbiosis

It was proposed that the eukaryotic cells have evolved from the symbiotic association of two or more bacterial cells. The bacterial cells which were smaller in size might be engulfed by the larger ones. This way all the beneficial organelles evolved together as a single cell. This is how protist might have evolved. This was termed as "endosymbiotic relationship".

oxygen = 21% of the atmosphere

nitrogen = 78%

carbon dioxide = 0.1%

argon =0.934%

ionic bonds are two oppositely charged ions that attract. a sodium ion has a 1 positive charge; a chloride ion has a 1 negative charge. sodium and chloride have oppostive charged ions that attract which forms an ionic bond. a chemical bond formed when two atoms share electrons is called