Multiple choice

Which statement is NOT true? Sea grasses create a stable ecosystem by _____________.

  1. reducing erosion of coastlines

  2. trapping sediment

  3. producing large amounts of oxygen through photosynthesis

  4. elevating the water temperature

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Sea grasses stabilize coastal ecosystems by trapping sediment, reducing wave energy to prevent erosion, and producing oxygen. They do not elevate water temperature, which is regulated by solar radiation and ocean currents.