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CH Vocab 6
| Term | Definition |
|---|---|
| biome | a grouping of ecosystems with similar abiotic and biotic conditions |
| climate | the average conditons, including temperature and precipitation, over long periods in a given area, 165 |
| weather | the day-to-day conditionin Earth's atmosphere,165 |
| climatograph | a diagram that shows an areas average temperature and precipitation, 165 |
| net primary production | the organic matter, or biomass, that remains afrer celllar repiration, 167 |
| canopy | the dense covering of trees 50, to 80 meters above the ground in a rain forest,168 |
| emrgent layer | the few tall trees that extend above the canopy in a rain forest, 168 |
| understory | the shorter trees and plants found in a tropical rain forest, 168 |
| epiphyte | a plant that grows on other plants instead of in soil, 169 |
| deciduous | a tree that loses its leaves and stops photosynthesis during part of the year, 170 |
| estivation | the deep sleeplike state that an animal enters when conditions are dry, 170 |
| coniferous | a tree bearing cones that typically does not lose its leaves, 173 |
| hibernation | the deep sleeplike state that an animal enters for most of the winter, 174 |
| permafrost | permanently frozen soil, 178 |
| salinity | a measurement of the amount of salts dissolved in water, 181 |
| photic zone | the uppermost layer of an aquatic ecosystem, where there is enough sunlight for photosynthesis to occur, 182 |
| aphotic zone | the layer below the photic zone in an aquatic ecosystem, where no sunlight penetrates so photosynthesis cannot occur, 182 |
| benthic zoneth | the bottom layer of an aquatic ecosystem, 182 |
| littoral zone | the shallow near-shore portion of the photic zone, 183 |
| 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, 183 |
| wetland | an area of land that is flooded with water at least sometime during the year, 184 |
| flood plain | an area alongside a river that periodically floods, 185 |
| estuary | body of water, partly enclosed by land, that occurs where fresh water meets the water of an ocean or inland sea, 186 |
| upwelling | the flow of cold, nutrient-rich water toward the surface of the ocean, 188 |
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