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chapter 6
| Term | Definition |
|---|---|
| biome | is a group of ecosystems that share similar abiotic and biotic conditions |
| climate | describes the average conditions |
| weather | the day to day conditions |
| climatograph | |
| net primary production | is the organic matter,,or biomass, that remains after cellular respiration |
| canopy | tall trees from a dense covering |
| emergent layer | the tallest trees pop through the canopy and make up up the top layer of the rain forest |
| understory | shorter trees and plants |
| epiphyte | are plants that grow on other plants instead of soil |
| deciduous | organisms that inhabit tropical dry forests have adapted to seasonal fluctuatuions in precipitation and temperature |
| estivation | when conditions are dry,some animals enter a deep sleep like period of dormancy |
| coniferous | many evergreen species in the temperate rainforest |
| hibernation | is a deep sleep like state that an animal enters for most of the winter |
| permafrost | because of the cold climate,underground soil remains frozen year round, |
| salinity | measures the amount of salts dissolved in water |
| photic zone | the uppermost layer of an aquatic ecosystem where there is enough sunlight for photosynthesis |
| aphotic zone | below the photic zone where no sunlight penetrates and photosynthesis cannot occur |
| benthic zone | the very bottom of a body of water |
| littoral zone | the shallow near shore portion of the photic zone |
| limnetic zone | is farther from shore where there are no rooted plsnts |
| wetland | are areas of land that are flooded with water at least part of the year |
| flood plain | |
| estuary | are bodies of water,partly enclosed by land,that occur when |
| upwelling | the vertical flow of cold,nutrients-rich water toward the surface ,ocean where horizontal currents diverge or flow away from one another |