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Author Question: Which of the following is a poisonous product still used in developing countries? a. carbon ... (Read 56 times)

shenderson6

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on: Jul 21, 2018
Which of the following is a poisonous product still used in developing countries?
 
 

a. carbon monoxide c. tetraethyl lead
  b. radon d. sulfur



Question 2

Some scientists insist that a recent upward trend in the temperature of the Earths surface is evidence of:
 
 

a. global warming c. oxygen depletion
  b. ozone depletion d. respiration



bubulittle310@msn.cn

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

C

Answer to Question 2

A


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