The correct answer of the given question above would be option D. The option that did not occur during the Cenozoic era is the formation of the ozone layer. The ozone layer has long been there before any era since it is part of the earth's atmosphere. Hope this answer helps.
Lactic acid fermentation and alcoholic fermentation
Answer:
The answer is » Both processes produce carbon dioxide.
Cells is a basic unit of life
Answer: carbon monoxide is one carbon atom and one oxygen atom
Explanation: