it is a stromatolite from the precambrian age
as stromatolite colonies expanded they released more oxygen, raising the level to 20%, allowing air-breathing life-forms to evolve.
Yes, plants produce oxygen and need carbon dioxide and sunlight to produce food.
stromatolite
Iron reacts with oxygen to produce rust.
When it is growing, yes. All plants produce oxygen.
Through photosynthesis, trees produce oxygen.
No. Bats don't produce oxygen. Bats are mammals and mammals need to oxygen to survive.
Bodies don't produce oxygen. we breathe it in.
Yes, plants produce oxygen and need carbon dioxide and sunlight to produce food.
Yes, plants produce oxygen and need carbon dioxide and sunlight to produce food.
All plants as a result of the way the are built and produce sustenance (photosynthesis) Produce oxygen.