Answer;
The best phrase will be;
<span>Neither benefits nor is harmed
</span>
Explanation;
Commensalism is a type of relationship where organisms of two species in which one species obtains food or other benefits from the other without harming it.
Commensal is the organism that benefits from the relationship or association.
Its C. Whenever you perform an experiment you want to make sure its as controled as it can possibly be.
Answer: Of all the branches of complex animals, sponges are the only group lacking TRUE TISSUE.
Explanation: