Answer: Vestigial structures
Explanation: Vestigial structures are an anatomical feature or behavior that no longer seem to have any purpose in the present form of an organism in the given species. Usually, they are often parts of the body that used to preform important functions in earlier forms of the organism.
Answer:
I think that it's A.
Explanation:
It's not D, because A & C contrast each other.
Commensalism is the relationship between two organisms where one benefits from the other and the other is not affected in anyway. The interaction between the remora and the shark demonstrates this relationship.
The organism belongs to domain Eukarya since it is multicellular, but its under kingdom Plantae, beacause its makes it own food and plants do that by doing photosynthesis