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Vocab 21.2

Terms for chapter 21 section 2

aphotic zone the deeper parts of the ocean, where there is so little light that plants cannot caryy out photosynthesis
photic zone the area of an equatic system that receizes enough light for photosynthesis to occur
intertidal zone an area along ocean shore-lines 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 rish in minerals and nutrients produced by biotic activity
oceanic zone the regions of the open sea that lie beyond and between the continental shelves
pelagic zone the upper, central, or open region of a body of water
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 a lake that contains a large amount of decaying organic matter and lacks oxygen as a result
oligotrophic lake a lake that lacks organic nutrients and, as a result, contains high levels of dizzolved oxygen in its lower layer
freshwater wetland an are of land that is covered in fresh water for at least part of each year
Created by: SheaM16