Journey to Planet Earth - 2003 Rivers of Destiny was released on:
USA: 2003
There are a LOT more than 4 rivers on the planet! You'll have to be specific if you want the right answer. Which 4 rivers are you wanting to know about?
Human Planet - 2011 Rivers Friend and Foe 1-7 is rated/received certificates of: Australia:G
it is easier to travel on water.
There are no rivers on mars. It is a completely life-less planet.
meander bends, mud and stuff get transported with the current, waterfalls, and etc
There were rivers, dieseases, lack of food, rattlesnakes, and more.
All rivers create boundaries of one kind or another and the Nile is no exception in its journey of over 4,000 miles through Africa.
Two Rivers - 2003 was released on: USA: 2003
Rivers - 2014 was released on: USA: 14 February 2014
Three Rivers - 2009 was released on: USA: 2009
Quite a few reasons: * Higher salt content in the rocks and soils that are collected by rivers on their journey to the sea * More rivers entering the sea
It is a lot easier to travel this way, rather than on foot or horse, and less tiring. They also knew that the rivers would flow towards an ocean which was one of the goals of their journey, they knew it would lead them in the right direction.