How does eubacteria get food?

Animals, including humans, are heterotrophic because they obtain their own food and metabolize it for energy. Answer 2: 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. read more

Eubacteria may display both heterotrophic and autotrophic characteristics. Heterotrophic organisms obtain their nutrients through absorbing carbon from their food sources and comprise a vast majority of all living organisms. read more

Bacteria that use oxygen are called aerobes. Those that do not are called anaerobes. This distinction is not absolute, however, since many organisms can switch between the two modes of metabolism, and others can tolerate the presence of oxygen even if they do not use it. read more