Commensalism. The fish is benefited and the sea urchin is not affected.
My guess would be D.. Not for sure tho.
Organisms are classified and divided in a community based on the modern classification system that was published by Carolous Linnaeus in the 18th century.
This criteria is also known as the Linnean system of classification, where the organisms are classified according to the following: Species, Genus, Family, Order, Class, Phylum and Kingdom.
Answer:
genrally it includes the population ,community, ecosystem,and biosphere .An ecosystem is all the living things in an area interacting with all of the abiotic parts of environment
Treat animals gently under all conditions. You don’t want to hurt them at all.
