Question

Three billion years ago, Earth's atmosphere was very different. It included the gases methane and ammonia. If scientists found a new planet outside our solar system that had an atmosphere similar to Earth's three billion years ago, what kingdom's organisms would you expect the new planet's organisms to resemble?

Answer 1

Protista
Eubacteria
Archaebacteria
Plantae

Answer 2

Archaebacteria :)

Answer 3

OMG THANK YOU!!!

Answer 4

Yw