Interactions Among Living Things

Predation An interaction in which one organism kills another for food.

Predator The organism that does the killing.

Prey The organism that is killed.

Symbiosis A close relationship between two species that benefits at least one of the species.

Mutualism A relationship in which both species benefit.

http://animalsymbiosis. weebly http://animalsymbiosis.weebly.com/nile-crocodile-and-egyptian-plover-bird.html http://www.necsi.edu/projects/evolution/co-evolution/mutualistic/co-evolution_mutualistic.html

Commensalism A relationship in which one species benefits and the other species is neither helped nor harmed.

http://thebiomedesert. weebly http://thebiomedesert.weebly.com/mutualism-commensalism-parasitism-and-preatorprey.html

Parasitism Involves one organism living on or inside another organism and harming it. Parasite – the organism that benefits Host – the organism it lives on or in

http://www.cdc.gov/parasites/babesiosis/gen_info/faqs.html

Examples Pictures of Symbiotic Relationships http://www.marietta.edu/~biol/biomes/symbiosis.htm Types of Interactions Quiz http://www.cstephenmurray.com/onlinequizes/biology/Ecology/typesofinteractionsexamples.htm