The river north of the Colorado river is the Green River
And if u want to look for yourself just look at a map.
Read this , I don’t know how to explain it though sorry:/
Answer:
A colony is like a group of people or creatures that live in the same place.
The best example I can give is an Ant colony.
Ant colonies live in ant holes made by workers, and the ants all go hunt for food and stuff like we do.
<em>Hope this helps!</em> have a great day! ♣