<span>So far, astronomers have found more than 500 solar systemsand are discovering new ones every year. Given how many they have found in our own neighborhood of the Milky Way galaxy, scientists estimate that there may be tens of billions of solar systems in our galaxy, perhaps even as many as 100 billion.</span>
The answer is all of the above because they are all true.
So the answer is D
Answer:
B
Explanation:
It allowed all other countries into Canada to trade ,hence ,it boots their economy to it's current status
A. collapsing dust clouds
Answer:
United States
China
Japan
Germany
India
I hope this is correct sorry if I'm wrong
Explanation: