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chapter 6

TermDefinition
biome a grouping of ecosystems with similar abiotic and biotic conditions
climate the average conditions including temperature and precipitation over long periods in a given area
weather the day to day condition in earths atmospheres
climatograhs a diagram that shows an areas average temperature and precipitation
net primary production the organic matter or biomass that remains after cellular respiration
canopy the dense covering of trees 50 to 80 meters above the ground in the rain forest
emergent layer the few tall trees that extended above the canopy in a rain forest
understory the shorter trees and plants found in a tropical rain forest
ephiphytes a plant that grows on other plants instead of in soil
deciduous a tree that loses its leaves and stops photosynthesis during a part of year
estivation the deep sleeplike state that an animal enters when conditions are dry
coniferous a tree bearing cones that typically does not lose its leaves
hibernation the sleeplike state that an animal enters for most of the winter
permafrost permanently frozen soil
salinity a measurement of the amount of salt dissolved in water
photic zone the uppermost layer of an aquatic ecosystem where there is enough sunlight for photosynthesis to occur
aphotic zone the layer below the photic zone is an aquatic ecosystem where no sunlight penetrates so photosynthesis cannot occur
benthic zone the bottom layer of an aquatic ecosystem
littoral zone the portion of the photic zone
limnetic zone the portion of the photic zone that is farther from shore than the littoral zone no rooted plants are found in this zone
wetlands an area of land that is flooded with water at least sometime during the year
flood plain an area alongside a river that periodically floods
estuaries a partially enclosed, coastal water body where freshwater from rivers and streams mixes with salt water from the ocean
upwelling the flow of cold nutrients rich water toward the surface of the ocean
Created by: user-1978904
 

 



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