Which of the following are responsible for high levels of O₂ in Earth's atmosphere?
A)photoautotrophs
B)photoheterotrophs
C)chemoautotrophs
D)chemoheterotrophs that perform decomposition
E)parasitic chemoheterotrophs

Question

Quizplus · Accepted Answer

Photoautotrophs, such as plants, algae, and cyanobacteria, are able to carry out photosynthesis to produce oxygen as a byproduct. This process has been responsible for the buildup of oxygen in Earth's atmosphere over billions of years.

Which of the Following Are Responsible for High Levels of O₂