Question

Question 10:

Scientists estimate that the Earth and the Solar System were formed how long ago? No hint available for this question
100 million years
3.5 billion years
4.5 billion years
10 billion years

Answer 1

i have no clue

Answer 2

4.6 billion years ago
According to the nebular hypothesis, our Solar System began around 4.6 billion years ago when part of a molecular cloud of interstellar gas, which was filled with particles of ice, dust, rock, and other particles, collapsed. http://www.universetoday.com/38118/how-was-the-solar-system-formed/

Answer 3

so c? thankss

Answer 4

ye