Step two of the procedure states: "using sterile technique, place a loopful of inoculum from the m. luteus culture in the drop of nigrosin and mix." which of the procedures qualifies as sterile technique?

neither

Explanation:

the procedure state only a mixture between culture and nigrosin dye, it does not state anything about how to sterilize.

geosphere and hydrosphere.

this is because the geosphere has to do with geological events, while the hydrosphere controls all water on earth.