Pistol shrimp and gobies depend on each other for shelter and protection. they have a beneficial relationship with each other. what’s this symbiotic relationship called? a. commensalism b. mutualism c. parasitism d. predator-prey

Which best describes the nucleus of an atom a. it is where all of the particle s of the atom are located b. it is the negatively charged part of the atom c. it is where the electrons and the protons are located d. it is the part of the atom with the greatest mass