Symbiotic realtionships consists of three different groups.  Those groups are paratism, commensilism, and mutalism. Paratism is when one organism is helped and when one is hurt.  Commensilism is when one organism is helped and when one is neither helped or hurt.  Mutalism is when both organisms are helped.


 This is an Acacia tree covered with its symbiotic partners, ants. The intricacy of their relationship is astounding. These ants live in the trees thorns, and the tree has actually evolved a network of tunnels within its branches for the ants to crawl through.The tree also grows small nutritious fruits called Beltian bodies at the leaf tips for the ants to harvest. In return, the ants defend the tree from herbivores with their painful stings. Also, they cut down any plants nearby the Acacia that would block sunlight, and even get rid of debris under the tree to help protect it from a fire.


 At least nine species of moths, mites and beetles live on sloths, eating the algae on their fur.  The arthropods lay their eggs on the dung of the sloths, which provides food for the growing larvae.  This relationship does not hurt of the sloth, but provides no benefit either.


 A parasitic wasp preys on fig wasps, drilling a small hole into the fig and using her long ovipositor to inject an egg near a developing fig wasp larva, which will be consumed by the parasitic larva after it hatches.


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