<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>
After all ice caps have melted and the polar bears drown, and the coastal cities are all underwater, Al Gore will ride a spacecraft to the Moon or Mars and inhabit there and tell everyone I told you so...
Answer:What type of economic activity is shipping?
Explanation:
SHIPPING IS A VITAL FACILITATOR OF WORLD TRADE
The sun rises due east and sets due west.
Igneous rock and metamorphic rock.
