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Author Question: Which gas is a major source of indoor pollution? A) carbon dioxide B) radon C) nitrous oxide ... (Read 73 times)

809779

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on: Jul 13, 2018
Which gas is a major source of indoor pollution?
 A) carbon dioxide
  B) radon
  C) nitrous oxide
  D) sulfuric acid

Question 2

Scientists pose hypotheses, or informed predictions about how our natural world will behave, using the ___________________ _ method.
 Fill in the blank(s) with correct word


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Kimmy

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Reply #1 on: Jul 13, 2018
Answer to Question 1

B

Answer to Question 2

scientific


809779

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Reply 2 on: Jul 13, 2018
Gracias!

Jsherida

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

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