A scientist is studying the Bear Creek swamp, which is wet most of the year and is filled with such animals as alligators, beavers, and numerous kinds of fish. What kind of ecosystem is the Bear Creek swamp?

wetland
pond
stream
estuary

i think it's a a stream

sorry if I'm wrong

Wetland

Explanation:

It is wet most of the year

There is also alligators, which tend to be there commonly.

AND in the start of the question, it says swamp, swamps are the most similar to wetlands.

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i hope this you