Which enzyme is most abundantly found on Earth?

Explanation

Rubisco is the most abundant enzyme on Earth, primarily due to its critical role in the Calvin cycle of photosynthesis, where it facilitates the fixation of carbon dioxide into organic compounds. This process is fundamental for producing the organic materials that form the basis of most life on Earth. Other enzymes like nitrogenase, invertase, and catalase have important but more specialized roles and are not as universally abundant as Rubisco.