The answer is A, 4.6 billion years old. The solar system was obviously formed after the big bang, and using the big bang theory and the birth of our sun, projections show that our solar system is at most 4.6 billion years old.
I'm pretty sure it is just the economy
Great plains is the broad interior are of north america that used to be grasslands
Answer:
It is called continental drift because the continents move.
Explanation:
Bristol is an international city and has a growing international reputation as a sustainable, innovative and culturally diverse place, winning national polls for being the UK's most liveable city, European awards for our green credentials and in China for our innovation.
