What are the three major subdivisions of all organisms?

1. archaea

2. eubacteria

3. eukaryota

explanation:

eucaryota are all plants and animals and humans

eubacteria are bacteria

archana are microscopic single celled organinsms. some make their own food in a process called photosynthesis like plants. but many absorb their food sources in a similar way as bacteria.

there is not 1 highest source of protein, but there are many; meats, fish, poultry, seafood, cheese, eggs, yogurt and milk. the only non complete animal food that is beneficial is gelatin.

sorry if this did not , have a great day!