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Ecosystems&Biomes

Chapter 2 Science Vocab

TermDefinition
Producer An organism that can make its own food.
Consumer An organism that obtains energy by feeding on other organisms.
Herbivore Consumers that eat only plants.
Carnivore Consumers that eat only animals.
Omnivore Consumers that eat both plants and animals.
Scavenger A carnivore that feeds on the bodies of dead organisms.
Decomposer Break down biotic wastes and dead organisms and return the raw materials to the ecosystem.
Food Web Consists of overlapping food chains in an ecosystem.
Food Chain A series of events in which one organism eats another and obtains energy.
Energy Pyrimid Shows the amount of energy that moves from one feeding level to another in a food web.
Evaporation The process of which molecules of liquid water absorb energy and change to gas.
Condensation The process which a gas changes to a liquid.
Precipitation Rain, Snow, Sleet, or Hail
Nitrogen Fixation The process of changing free nitrogen into a usable form of nitrogen.
Biome A group of ecosystems with similar climates and organisms.
Climate The average annual temperature and amount of precipitation in an area that determines its biome.
Desert An area that receives less than 25% of rain per year.
Rain-Forest A forest with large amount of rainfall per year.
Emergent Layer Tallest layer of the rainforest which receives the most sunlight and can reach up to 70 meters.
Canopy Underneath trees 50 meters tall from a leafy roof.
Understory A layer of shorter trees and vines around 50 meters high
Grassland An area that is mostly populated by grasses and other non woody plants.
Savanna Receives as much as 120 centimeters of rain each year.
Deciduous Tree Tees that shed their leaves and grow new ones each year.
Boreal Forest Dense forest found in upper regions of the Northern Hemisphere.
Coniferous Tree Trees that produce their seeds in cones and have leaves shaped like needles.
Tundra Extremely cold and dry.
Permafrost Frozen soil.
Biogeography The study of where organisms live and how they got there.
Continental Drift As the plates move, the continents move with them in a process.
Dispersal The movement of organisms from one place to another;.
Exotic Species A organism that is carried into a new location by people.
Esturary Found where the freshwater of a river meets the saltwater of an ocean.
Intertidal Zone Located on the shore between the high-tide line and the low-tide line.
Neritic Zone Region of shallow water found below the low tide line and extending over the continental shelf.
Created by: jrs201077136
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