Symbiotic symbiosis refers to the ecological relationship between two species in the biological world. One organism will benefit from this relationship, but the other organism does not receive any benefits in this relationship, but also No harm, just drive the other party to gain benefits. According to the above definition, Which of the following phenomena belong to the symbiotic symbiosis:. ['Microorganisms are parasitic in the stomach of ruminants and can also help ruminants digest food.', 'The catfish has a poor swimming ability. Its dorsal fins have evolved into suction cups that are adsorbed on the sharks. As the sharks swim around the ocean, when the sharks capture their prey, the catfish steals the remaining food.', 'Algae plants grow in the thick hair of the sloth. During the rainy season, the algae flourish and form a green camouflage, making it easier for the sloth to survive in the bush. The algae use the sloth as a derivative tool.', "Jellyfish prey on conch larvae. After entering the jellyfish's body cavity, the larvae will not be digested, but will gain food and protection When the larva grows out of the jellyfish body cavity, it will take away a jellyfish breeding body."]