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MB 21.2

MB Chapter 21, Section 2

TermDefinition
aphotic zone the deeper parts of the ocean, where there is so little light that plants cannot carry out photosynthesis
photic zone the area of an aquatic system that receives enough light for photosynthesis to occur
intertidal zone an area along ocean shorelines that lies between low and high water lines
neritic zone a shallow marine environment that is near the shore or over the continental shelf and that is rich in minerals and nutrients produced by biotic activity
oceanic zone the region of the open sea that has characteristic life-forms and geography
pelagic zone the region of an ocean or body of fresh water above the benthic zone
benthic zone the bottom region of oceans and bodies of fresh water
plankton the mass of mostly microscopic organisms that float or drift freely in the waters of aquatic (freshwater and marine) environments
estuary an area where fresh water from rivers mixes with salt water from the ocean; the part of a river where the tides meet the river current
eutrophic lake lakes that are rich in organic matter and vegetation
oligotrophic lake a lake that lacks plant nutrients and that has a lot of oxygen dissolved in its lower layer
freshwater wetland areas of land that are covered with fresh water for at least part of each year
Created by: simmonsr20