Explanation:

The biological community in an area or ecosystem is a complex network of interactions.The interaction that occurs among different individuals of the same species is called intra specific interaction while the interaction among individuals of different species in a community is termed as inter specific interaction. Specific terms are applied to inter specific interactions depending upon whether the interaction is beneficial, harmful or neutral to individuals of the species.
Negative interactions:
a) Predation: Predator-prey relationship: one species (predator) benefits while the second species (prey) is harmed and inhibited.
b) Amensalism: One species is inhibited while the other species is unaffected.
c) Competition: Adversely affects both species
d) Parisitism : Beneficial to one species (parasite) Health and harmful to the other species (host).
Positive Interactions:
a) Commensalism: One species (the commensal) benefits, while the other species has neutral Interactions.
b) Neutralism: Neither species affects the other (the host) is neither harmed nor inhibited
c) Mutualism: Interaction is favourable to both species