Question

which of the following can be found in a freshwater ecosystem? kelp, algae cattail, water lilies mangrove trees seaweed, seagrass

Explanation:

Cattail and Water Lilies are plants that thrive in freshwater ecosystems. Kelp is typically found in marine (saltwater) environments. Mangrove trees are usually in brackish water (a mix of salt and fresh) near coasts. Seaweed and Seagrass are marine plants.

Answer:

Cattail, Water Lilies