Who wants to friend request me?

Hey, i was what is consisted in a sustainable city? like what unique designs they have, etc. for answering ; )

Are divergent boundaries responsible for tsunamis?

The first atomic explosion was detonated in the desert north of alamogordo, new mexico, on july 16, 1945. what percentage of the strontium-90 ( yr) originally produced by that explosion still remains as of july 16, 2016?