Author Question: Most scientists believe that the Big Bang took place approximately ____ years ago. A)140 billion ... (Read 55 times)

Davideckstein7 · **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