Name of Relationship

 

 

Examples

Mutually Beneficial Relationship

One Half Benefits

One Half Benefits

barracuda and cleaner fish,

humans and their pets,

bees and flowers,

a good marriage

Commensual Relationship

One Half Benefits

One Half Is Unaffected

A remora clings to a shark and gets a free ride to meals, but the shark receives neither harm nor benefit.

Birds build their nests in trees away from predators, but the tree receives neither harm nor benefit.

Parasitic Relationship

One Half Benefits

One Half Is Harmed

Lampreys, leeches, mosquitoes and tapeworms all feed on other creatures in a way that harms them.

Ammensual Relationship

(rare)

One Half Is Unaffected

One Half is Harmed

Penicillin kills bacteria, but receives no benefit from doing so; human pollution sometimes destroys life, but we receive no benefit from doing so; when sheep or cattle make trails in grass, killing it, but receive no benefit from the grass.

 

 

 

 

Write an essay about mutual or "win-win" relationships

 

Possible Strategies:

         Write about a relationship you currently have or have had with a person (parent-child, friend-friend, boyfriend-girlfriend, etc.)

         Write about a mutual between two people you know.

         Detail the necessary elements, traits, or characteristics of a successful mutual relationship.