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        | the smallest oldest life forms and simplet organisms in the sea are |  | Definition 
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        | the smallest oldest life forms and simplet organisms in the sea are |  | Definition 
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        | dead particulate organic material |  | 
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        | microscopic organisms that drift with the currents |  | 
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        | The most important primary producers in the ocean are |  | Definition 
 
        | the very smallest phytoplankton |  | 
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        | Heterotrophic organisms use... |  | Definition 
 
        | preformed organic matter for their nutrition |  | 
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        | What don't macroalgae have |  | Definition 
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        | the three major groups of macroalgae are |  | Definition 
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        | is obtained from red alge and found in many foods |  | 
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        | is obtained from red algae and found in many foods |  | 
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        | the richness and variety of life on earth |  | 
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        | basically the euphotic zone |  | 
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        | zooplankton that spend their entire life as plankton |  | 
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        | How do benthic organisms colonize new areas of the ocean |  | Definition 
 
        | they have a planktonic larval stage in their life cycle |  | 
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        | discarded larvacean houses |  | 
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        | are a shrimp like organism |  | 
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        | discarded larvacean houses |  | 
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        | Zooplankton vertical migration is in sync with |  | Definition 
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        | describes how bacteria use dissolved organic matter to grow on |  | 
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        | Where are phytoplankton most productive |  | Definition 
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        | In the open ocean what limits the growth of phytoplankton |  | Definition 
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        | what color penetrates the water the most |  | Definition 
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        | one reason why upwelling areas are so productive for commercial fisheries because |  | Definition 
 
        | the food chain is so short |  | 
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        | sea otters are most important to kelp communities because |  | Definition 
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        | the complete body of a seaweed is known as |  | Definition 
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        | diatom frusules get smaller as they divide and to get them larger again what do the cells do |  | Definition 
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        | organisms that eat plants are called |  | Definition 
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        | organisms that eat plants are called |  | Definition 
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        | primary producers occupy the |  | Definition 
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        | generally there is little phytoplankton photosynthesis occuring deeper than the |  | Definition 
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        | the essential nutrient present in hte lowest amount limits growth |  | 
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        | the process in which bacteria break down particulate matter to release nutrients is called |  | Definition 
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        | iron availability often limits phytoplankton productivity most iron enters the ocean from |  | Definition 
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        | when the thermocline breaks down in hte winter, what enters the euphotic zone from deep water |  | Definition 
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        | in the ocean, rates of primary productivity are highest |  | Definition 
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        | why is primary productivity high along the equator in hte Pacific Ocean |  | Definition 
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        | vertical migration in zooplankton is correlated with |  | Definition 
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        | sea otters insulate their bodies from cold water |  | Definition 
 
        | having a very dense coat of hair |  | 
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        | baleen whales mainly feed on |  | Definition 
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        | the real start of marine biological research is generally acknowledged to be |  | Definition 
 
        | British challenger expedition |  | 
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        | flexible framework of inquiry used by scientists |  | 
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        | originate from coral atolls which have sunk beneath teh sea surface |  | 
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