Note from ScienceLine moderator:
From our database, I took this part of an answer only to respond to your question which you need so much, however if you have time, try to read the whole answer.

Here are some ways the kingdoms, and the domains of eubacteria and archae are different from each other, and (gives you hints of what they can eat):
Plants can make their own food (photosynthesizers, autotrophs) using carbon dioxide nutrients and sunlight, while Animals generally have to get their food by consuming other organisms (heterotrophs), and Fungi get their energy by eating dead or decaying material (saprophytes).
Eubacteria, Archae bacteria, and Protists both have members that are autotrophic or heterotrophic, or both (how do you think this is possible?)
Fungi, Animals, and Plants all need to live in aerobic (oxygen-containing) environments, and, but some Eubacteria and many Archae bacteria live in places where there is very little or no oxygen (where would this occur on Earth?). Some Protists can also live in anoxic (anaerobic, or no-oxygen) environments, but some need oxygen to live.
Bacteria have no cellular nucleus like the Eukaryotic kingdoms do (organisms with cellular nucleuses), and their cellular parts are much simpler than Eukaryotes.
Eubacteria, Archae bacteria, and Protists are single-celled. Animals and Plants are multi-celled.
Fungi are strange because some are multi-celled, but some are technically unicellular (single-celled).