Answer:
Parasitism
ExplanatioThe flatworm seems to be the only one benefitting from the relationship because it is using the snail as a host and provides it a place to grow but the snail is being harmed by the worm while doing so. Therefore the relationship is parasitic.
Answer:i believe the awnser is C
Explanation:
Because science is always changing and every time you cam come up with a new outcome.