Organisms belonging to the kingdom eubacteria, kingdom archaebacteria, and some organisms in the kingdom protista are unicellular. what is it that places them into different kingdoms?

Air pollution is only caused by human activity, select the best answer from the choices provided ot of true or false

Actinobacteria sp. are fermenting organisms (which do you use oxygen to breathe) referred to as chemoorganohetereotrophs this means they break down organic material and convert it to inorganic material. which part of the carbon cycle does this describe

The earth formed roughly 4.5 billion years ago, yet evidence of life dates back to about 3.5 billion years ago. which one is not a possible hypothesis of how life on earth arose?