Answer:
Space is a vacuum thus you wouldn't be able to hear any noise.
The answer is C. The distribution of traits in a population
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.
I would say presence of inorganic molecules I THINK not sure.