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Author Question: Jet planes avoid bad weather by flying above it in the a. stratosphere. b. troposphere. c. ... (Read 60 times)

sc00by25

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Jet planes avoid bad weather by flying above it in the
 a. stratosphere.
  b. troposphere.
  c. mesosphere.
  d. thermosphere.

Question 2

What is the symbol for the element whose atoms have 40 electrons each?
 a. Ge
  b. Zr
  c. Ar
  d. None of these



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steff9894

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Answer to Question 1

a

Answer to Question 2

b




sc00by25

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Reply 2 on: Jul 28, 2018
:D TYSM


bimper21

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Reply 3 on: Yesterday
Gracias!

 

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