this is so CONFUSING WTH anyone kind to help with those two questions just answer how much you know, I’ll still brainlist it’s urgent!

Answer:
4. mutualism - both benefit
5. Commensalism- one benefits while the other is not affected
"Mutualism is a symbiotic relationship in which both species benefit. Commensalism is a symbiotic relationship in which one species benefited while the other species is not affected."