Which area is MOST likely to support a marsh ecosystem? a sunny, open area with lots of sand dunes a shallow, sheltered area near an estuary a rocky, coastal area with very high tides deep ocean water miles from a river's mouth

coastal area with very high tides deep ocean water miles from a river's mouth

Explanation:

Marshes are a type of wetland ecosystem where water covers the ground for long periods of time. Marshes are dominated by herbaceous plants, such as grasses, reeds, and sedges(National Geographic Society).

Animals found in a marsh include;  frogs, toads, turtles, snakes, mammals, birds and insects. A marsh is a wetland that is dominated by herbaceous rather than woody plant species(Wikipedia). It is characterized by very high tides deep ocean water miles from a river's mouth.

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