Final answer:
Animals, including birds, horses, and humans, get energy through cellular respiration. Obligate anaerobes, like the bacteria C. botulinum, obtain energy through fermentation.
Step-by-step explanation:
Animals, including birds, horses, and humans, get energy through cellular respiration.
Cellular respiration is a process that occurs in the mitochondria of cells and converts glucose and oxygen into ATP (adenosine triphosphate), which is the energy currency of cells.
An obligate anaerobe is a type of organism that cannot survive in the presence of oxygen and obtains energy through anaerobic processes.
Bacteria like C. botulinum, which is an obligate anaerobe, get energy through fermentation.
Fermentation is an anaerobic metabolic process that converts glucose into ATP without the use of oxygen.