Question

what kind of plant can you find in an estuary? seaweed, kelp mangrove tree, eelgrass cattails, water lilies seagrass

Explanation:

Estuaries are coastal areas where freshwater from rivers meets and mixes with saltwater from the ocean. Mangrove trees are well - adapted to the brackish water (a mix of salt and fresh water) conditions in estuaries. They have special adaptations like salt - filtering roots and prop roots for stability in the soft, muddy soil. Eelgrass is also a common plant in estuaries as it can tolerate the fluctuating salinity.
Seaweed and kelp are more commonly found in marine (saltwater) environments away from the influence of significant freshwater input. Cattails and water lilies are more typical of freshwater wetlands rather than the brackish estuary environment. Seagrass is more commonly associated with marine coastal areas that are not estuaries (where salinity is more constant and closer to that of the open ocean).

Answer:

Mangrove Tree, Eelgrass