A good indicator is how deep it is, the longer a river is around the deeper a river valley it carves out, althought it doesn't work for all rivers.
Hundreds
true
River Indus has 29 tributaries
Yes, there are hundreds of bridges over the River Rhine, too many to list here.
There are hundreds of rivers in the uk, the best known is probably the Thames.
Many hundreds of cities are not located on the Missouri
St. Louis is the big one, but there are literally hundreds.
No less then 15 major river systems combine to make up the Colorado River plus hundreds of small streams and creeks.
iogtfingit7fivn
Eel River
All insects are invertebrates. There are hundreds of insects native to the amazon.
It means that a butterfly flies around you at the river. :)