Question

New evidence changed ideas about what caused the Black Death when a team of scientists visiting Hong Kong discovered that

a bacterium caused the Black Death.
a virus caused the Black Death.
rabies caused the Black Death.
tetanus caused the Black Death.

Answer 1

A

They figured out bacterium caused the black death.

Answer 2

A. a bacterium caused the Black Death.

Step-by-step explanation:

This new evidence changed ideas about the cause of the Black Death because prior to the team of scientists' visit to Hong Kong, it was believed that the plague was caused by a virus or some other type of pathogen. However, the scientists' findings showed that the plague was actually caused by a bacterium, which was a far more likely explanation.

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