We need to distinguish the oxygen which is a constituent of water and oxygen which is dissolved in water. The former is made in the hearts of stars; the latter is largely released from carbon dioxide by photosynthetic plants.
The phytoplankton in the ocean produces the most oxygen on Earth.
The Amazon Rainforest in South America produces the most oxygen in the world, contributing a significant portion of the Earth's oxygen supply.
The process that produces most of the oxygen in Earths atmosphere is photosynthesis. Plants use this process to create food.
While sometimes water vapor may separate back into hydrogen and oxygen oxygen most often exists by itsself due to photosynehesis which produces most of earth's oxygen
The Amazon rainforest in South America is often referred to as the "lungs of the Earth" due to its high oxygen production. It covers several countries including Brazil, Peru, and Colombia. However, it is important to note that a significant portion of Earth's oxygen also comes from phytoplankton in the oceans.
trees
trees
About 2% of the Earth's oxygen it produces.
Because it produces oxygen for the world
The plant that produces the most oxygen in the world is the phytoplankton, which are tiny marine algae found in oceans and bodies of water.
Because it produces oxygen for the world
It produces 97% of the Earth's oxygen.