Ceratium fusus is a protist that is found primarily in coastal waters, especially around the coast of the United Kingdom. These
organisms are unique because they can undergo a special chemical reaction at night that helps defend them against
predators. It provides defense by attracting larger predators that prey on the organisms that eat Ceratium fusus. Which
characteristic of Ceratium fusus is being described?
photosynthesis

The answer is Bioluminescence

Hope that helps

Explanation:

step 1: nitrogen fixation- conversion of atmospheric no₂ into forms useful to plants by lightning, bacteria, and cyanobacteria.

step 2: nitrification-process of converting ammonia to nitrite or nitrate.

step 3: assimilation-plant roots absorb new form of nitrogen.

step 4: ammonification-conversion of organic nitrogen to ammonia by bacteria involved in decomposition.

step 5: denitrification-bacteria turns the decomposed matter back into n₂o, which is released into atmosphere; repeat cycle.