Question

The scientists experimented on microbes in different atmospheres. Which of the following statements does BEST describe their results?
The microbes grew better in the hydrogen gas than in any of the other gases.


The microbes only grew in the bottles containing earth-like air.


The microbes grew in all of the bottles regardless of what gas was in the bottle.

Answer 1

Answer: The microbes only grew in the bottles containing earth-like air.

Explanation:

The growth of microbe depends upon the availability of substrate, moisture, and gas. The atmosphere is a mixture of gases. Earth-like atmosphere favors the survival of many micro-organisms. Carbon dioxide, oxygen, methane, nitrogen, and others are valuable earth like gases that will favor the survival of many microorganisms. So, according to the given situation in the experiment microbes will grow in earth like air.