<span>The Paleolithic age started about 750,000 B.C. to 500,000 B.C. and ended around approximately 8,500 B.C.</span>
Most lakes were formed from Melting glaciers. Because when the glaciers melted they became lakes.
Hope this helps.
An estuary is where salt water and fresh water meet. Estuaries are usually found at the edge of the coast, where the ocean water, or salty water, meets river, lake, any fresh water source, water.
A tributary is something completely different. It is a, usually smaller than the main river or lake, river/stream stemming off a bigger river or lake, or flowing into that river or lake.
Horizontal lines of latitude that run across the globe are known as A. parallels.
