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Author Question: People had the means to pasteurize milk and make it safe to drink long before they began to do it. ... (Read 106 times)

kshipps

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on: Jul 21, 2018

People had the means to pasteurize milk and make it safe to drink long before
  they began to do it. Why do you think it took so long for people to realize the
  usefulness of pasteurization?


 
  What will be an ideal response?

Question 2

Describe the differences you observed between the first sample of pond water
  and the heat-treated sample. What happened to the microorganisms?


 
  What will be an ideal response?


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blakcmamba

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Reply #1 on: Jul 21, 2018
Answer to Question 1

The development of microscopes was needed to observe and document the
existence of microorganisms. Years of research were needed to determine the role of
the microorganism in causing illness



Answer to Question 2

The movement of the organisms in the first sample should be much greater than
those in the heat-treated sample. The organisms and debris are present in the
treated sample, but they are no longer moving.



kshipps

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Reply 2 on: Jul 21, 2018
Great answer, keep it coming :)

diana chang

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

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