Where are the statements? You can attached the file or a picture of your question with the statements.
The answer to the question is the Marine snow.
In the deep ocean, marine snow is a continuous shower of mostly detritus falling from the upper layers of the water column. It is a significant means of exporting energy from the light-rich photic zone to the aphotic zone below. Marine snow particles are found throughout the world's oceans in all parts of the water column.
Algae, the probably compete for the
Food source.