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Author Question: More than 90 of major water systems in the U.S. rely on chemical removal systems that were installed ... (Read 144 times)

fox

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on: Jul 11, 2018
More than 90 of major water systems in the U.S. rely on chemical removal systems that were installed over 50 years ago.
  Indicate whether the statement is true or false

Question 2

Approximately 97 of the Earth's water is saltwater and undrinkable.
  Indicate whether the statement is true or false


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tanna.moeller

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Reply #1 on: Jul 11, 2018
Answer to Question 1

T

Answer to Question 2

T


fox

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Reply 2 on: Jul 11, 2018
Thanks for the timely response, appreciate it

cici

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Reply 3 on: Yesterday
Wow, this really help

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