Answer:
El espacio es algo extraño. El espacio se considera todo fuera de la atmósfera de un planeta y / o estrella. así que, básicamente, la mayoría de lo que constituye el universo es el ESPACIO entre las cosas. De ahí el nombre del espacio.
North America was most likely over the South Pole of Pangaea.
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.
