Molecular oxygen in the atmosphere originated mostly from plants,as shown below,as a by-product of _____.

Question

Quizplus · Accepted Answer

Molecular oxygen in the atmosphere is produced through photosynthesis by plants and other photosynthetic organisms. It is a by-product of the process by which plants convert carbon dioxide and water into glucose and oxygen. This is why the Earth's atmosphere contains much more oxygen than other planets in our solar system, where there is no significant plant life.

Molecular Oxygen in the Atmosphere Originated Mostly from Plants,as Shown