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21.2 vocabb
Question | Answer |
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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 self and that is rich 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 ad 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 ampount 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 dissolved oxygen in its lower layer. |
freshwater wetland | an area of land that is covered in freshwater for at least part of each year. |