26 points what would happen to an ecosystem without nitrifying bacteria?

Microbes. Bacteria, for example, convert nitrogen and carbon dioxide from the air into usable components that plants and animals can use as essential building blocks. A loss of all microbes would be terrible news for living organisms that can't create or take in these essential nutrients on their own.

the ecosystem would start falling apart it needs bacteria

instead of copying and pasting things off of tests or work done on computer which im sure you did, try and read over the question carefully