Question

how are underwater plants useful​

Answer 1

Answer:

Underwater plants provide oxygen, food, and shelter.

The health of submerged aquatic vegetation is an important environmental indicator of overall ocean and estuary health. ... Seagrasses also stabilize sediments, generate organic material needed by small invertebrates, and add oxygen to the surrounding water.

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Answer 2

Answer:

underwater plants are like hydra,water lily,etc

they helps for

• produces a large amount of oxygen
• it helps for food like seafood
• it helps the trap for fishes