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.
Answer:
Some geologic processes happen quickly, while others happen over millions of years.
Explanation:
uniformitarianism and catastrophism are geological terminologies which are used to describe events.
Catastrophism is a term used in geology to explain the theory that the Earth is shaped by sudden occurrences which takes place from time to time,these events don't last long.
Uniformitarianism is a terminology used in geology to explain that the Earth is shaped by gradually occuring events or activities which takes place over time, Uniformitarianism can also be described as GRADUALISM.
The legend is that Newton discovered Gravity when he saw a falling apple while thinking about the forces of nature. Whatever really happened, Newton realized that some force must be acting on falling objects like apples because otherwise they would not start moving from rest.
