Obviously larger than normal meals may lead you to gain weight.
Answer should be A if multiple choice
Pollution; waste and discharge falls into the water, polluting the sea grass. It reduces the amount of sunlight and the plant might die.
Poor land management; trees lead to the erosion of dirt, making the soil cloud up the water, not giving the sea grass sunlight.
Careless behavior; from people stepping onto the sea grass, to other items falling and smothering the sea grass.
(Come up with one more on your own. c: )
The answer to your question is A
