a.
rainfall
c.
irrigation
b.
snowmelt
d.
aquifers
They were good and adventurous sailors and good successful traders.
The primary source is today not certain; probable equivalent to the source of the Rukarara river. The end is in the Mediterranean sea.
The primary source of acid rain is sulphur oxides e.g H2SO4,SO2,SO3 respectively
Source : BAE, JIEUN [http://myspace.com/91113111]
Length - 4,132 miles Primary source - White Nile Secondary source - Blue Nile Source confluence near Khartoum Mouth - Mediterranean Sea The link below will give further information.
The Xi River begins as it enters Yunnan Province from the autonomous region of eastern Guangxi.
Length - 4,132 miles Primary source - White Nile Secondary source - Blue Nile Source confluence near Khartoum Mouth - Mediterranean Sea The link below will give further information.
It is a primary source.
This is a primary source.
A picture can indeed be a primary source.
it is a primary source
The source is the confluence of the primary source - White Nile and the secondary source - Blue Nile is near Khartoum. It flows into the Mediterranean Sea