Answer:
The Marine Ecosystem is the Largest Ecosystem on Earth
The Marine Ecosystem has the Greatest Biodiversity on Earth
Phytoplankton in the Oceans Provide 50% to 85% of the Oxygen on Earth
Explanation:
There's 3 facts lol
Nitrogen is so vital because it is a major component of chlorophyll
And it also is a major component of amino acids, the building blocks of proteins. Without proteins, plants wither and die.