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Explanation:

6. He was investigating a mold growing in Staphylococcus culture dishes, that may have been killing bacteria.

7. He hypothesized that the mold was producing a chemical that killed the bacteria.

8. He tested the hypothesis by growing the mold in a broth then transferring it into a bacteria culture.

9. After putting mold into a culture with bacteria in it, the bacteria then died.

10. Antibiotics

the most common energy conversion is from kinetic energy to potential energy, and then from potential energy to kinetic energy.

later on comes the heat energy, mechanical energy, and other energy conversions.

this energy conversion is so common that we can find it in our day to day lives as well.

- one of the most common energy conversions involves the changing of potential energy to kinetic energy or kinetic energy to potential energy