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Author Question: Air pollution results from ______________ combustion of ______________ fuels. Fill in the blank(s) ... (Read 56 times)

dollx

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on: Jul 28, 2018
Air pollution results from ______________ combustion of ______________ fuels.
 Fill in the blank(s) with correct word

Question 2

About 15 by mass of Earth's core is composed of the element(s)
 a. iron
  b. nickel
  c. oxygen.
  d. silicon.
  e. iron and nickel.


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elizabethrperez

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Reply #1 on: Jul 28, 2018
Answer to Question 1

incomplete; impure

Answer to Question 2

b


dollx

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Reply 2 on: Jul 28, 2018
Wow, this really help

bblaney

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Reply 3 on: Yesterday
Excellent

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