<span>If a modern astronomer describes a faint star as being in the constellation cygnus, the swan, you know that the star is: </span><span>Somewhere within a particular region of sky having definite boundaries
</span>The swn of the constellation cygnus is located on northern part of the constellation. This means that the location is limited to the plane part of the milky wat.
Chile, Argentina, Brazil, Paraguay
I think the two sources would be drip irrigation which is like a river, lake, groundwater, etc... The second source could be is making a new irragation system that could deliver water faster.
It is the Mantle im guessing
