Answer:
Parasitism :
Parasitism may be defined as a type of biological interaction in which the individual gets benefit from the host. The species may affect the host and directly obtain their nutrition from the host.
Mutualism:
Mutualism is a type of biological interaction in which both the species get benefit .This is a type of positive interaction in which both the species are not harmed.
Commensalism:
Commensalism is a type of biological interaction in which one species is benefited and other species is neither benefited nor harmed. This is also a type of positive interaction.
