Final answer:
Mutualism, commensalism, and parasitism are three different types of symbiotic relationships. Mutualism benefits both species involved, commensalism benefits one species while the other is unaffected, and parasitism benefits one species while harming the other.
Step-by-step explanation:
Symbiotic relationships are close and long-term relationships between different species. Mutualism is a type of relationship where both species benefit from the interaction. An example is the relationship between bees and flowers, where bees collect nectar and pollen from flowers while helping to pollinate them. Commensalism is a relationship in which one species benefits while the other is unaffected. A common example is the relationship between cattle egrets and grazing mammals, where the egrets feed on insects disturbed by the mammals without harming them. Parasitism is a relationship where one species benefits at the expense of the other. An example is ticks feeding on the blood of animals.