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Author Question: Most scientists believe that the Big Bang took place approximately ____ years ago. A)140 billion ... (Read 41 times)

Davideckstein7

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on: Jul 13, 2018
Most scientists believe that the Big Bang took place approximately ____ years ago.
 A)140 billion
 B)40 billion
 C)14 billion
 D)140 million
 E)40 million

Question 2

According to most scientists, what is the greatest environmental problem facing the world today?
 A)climate change
 B)the ozone hole
 C)water pollution
 D)overpopulation
 E)waste disposal


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brbarasa

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

C

Answer to Question 2

D


Davideckstein7

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Reply 2 on: Jul 13, 2018
Excellent

cici

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Reply 3 on: Yesterday
Gracias!

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