What tree releases more oxygen?

The tree often cited for releasing the most oxygen is the mature oak tree, which can produce a significant amount of oxygen annually. However, other fast-growing species like the redwood and various tropical trees, such as the rubber tree and certain types of eucalyptus, also contribute greatly to oxygen production due to their size and biomass. Overall, the amount of oxygen produced can vary based on factors like tree size, species, age, and environmental conditions.