ethanopyrus kandleri and Pyrolobus fumarij are bacteria that live near hydrothermal vents under the oceans. Temperatures at these vents can reach well over 100 degrees Celsius.   Both organisms obtain energy from hydrogen but Methanopyrus kandleri grows best at 98 degrees Celsius while Pyrolobus fumarij prefers to reproduce at temperatures above 100 degrees Celsius. These bacteria provide the base of a food web at the bottom of the ocean floor.   What questions could a student ask in order to investigate this difference between the bacteria?   A. What kind of heat tolerance do other nearby organisms have?   B. Does the Methanopyrus kandleri live farther away from the vent than the Pyrolobus fumarij?   C. Does Methanopyrus kandleri have a thicker cell wall than Pyrolobus fumarij?

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A:

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Microbes

Microbes are microscopic living organisms that can only be detected with the help of specialized laboratory equipment called a microscope. These living organisms are so small that they are not visible to the naked eye.