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Name at least 4 ways we depend on other organisms OR our environment for survival… "state of living together." Greek parasitos "one who lives at another's expense mutuus = reciprocal, done in exchange Latin commensalis, meaning "sharing a table", from the prefix com-, meaning "together", and mensa, meaning "table" or "meal". " to enter or be put in rivalry with," Quickly write these definitions on the back of your Learning Plan!! Vocab “self-check” is Friday! Competition Predation Symbiosis • mutualism • commensalism • parasitism Crittercam • GOAL • PROCESS • WHY: Why would this be beneficial? Crittercam Video Discussion: http://nationalgeographic.org/activity/ecological-relationships/ Watch video clip: “Fish Thieves Take Rare Seals’ Prey” Predator/Prey (predation) Competition Crittercam Video Discussion: symbiotic relationship MUTUALISM PARASITISM MUTUALISM Which relationship was not demonstrated? Lemon Shark It was because of this relationship that Greg Marshall, marine biologist and filmmaker, invented Crittercam. In 1986, a shark approached him during a dive near Belize. Marshall noticed a remora clinging to a shark, and as he watched the shark disappear, it occurred to him that if he could put a camera in the place of the remora, he could see the shark's behavior unfold without disturbing the shark. Why do they do this? 1 2 3 The shark is not affected in the process since remoras eat only leftover food from the shark… (Commensalism) Symbiotic Interactions Worksheet How do ecological relationships shape the marine ecosystem? Why is it important to identify and understand these relationships?