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Eubacteria can obtain foods in a bunch of different ways. The earliest bacteria were likely lithotrophs which use inorganic compounds (compounds that don't have carbon) along with CO2 to make food. There are also photosynthetic bacteria which use the sun's light to use CO2 from the environment to make food

The three ways eubacteria obtain nutrients are:

  • from dead or living organic material

  • photosynthesis and

  • chemosynthesis.

Prokaryotic organisms

Eubacteria are a group of prokaryotic organisms that comprises of the ‘true’ bacteria and cyanobacteria, and they are distinct from archaebacteria.

There are three different ways these organisms obtain their food which include:

  • From dead or living organic material: By oxidation of the organic materials, these organisms obtain energy for dead materials.

  • Photosynthesis: They are capable of using the sun's light and CO2 from the environment to make food.

  • Chemosynthesis: They used chemosynthesis which is the synthesis of CO2 & water using energy that is gained from chemical oxidation of inorganic compounds.

Learn more about eubacteria here:

https://brainly.com/question/8695285