Although the division between a colony with specialized cells and a multicellular organism is not always clear, around 1 billion years ago, the first multicellular plants emerged, probably green algae. Possibly by around 900 Ma true multicellularity had also evolved in animals.
If someone is diagnosed with strep throat, they have been infected with a A. bacteria<span>. The bacteria responsible for strep throat is known as Streptococcus pyogenes, or group A Streptococcus. Because the disease is due to a bacterial infection, it can be treated using antibiotics.</span>