An organism that will die in the presence of oxygen is called a
pathogen
parasite
anaerobe
aerobe

The organism you’re looking for is called an anaerobe! These fascinating little creatures have adapted to thrive in environments devoid of oxygen, often using fermentation or anaerobic respiration to generate energy. They can be found in places like deep-sea vents, the intestines of animals, or in fermented foods, showcasing the diversity of life.

Interestingly, anaerobes play significant roles in various ecosystems and human applications. For instance, certain anaerobic bacteria are used in biogas production to break down organic matter, producing methane that can be harnessed as renewable energy. Additionally, they are essential in wastewater treatment, helping to decompose waste without oxygen. Pretty cool, right?