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Grade 6 Ch 2

Vocabulary words for Sections 1-2-3

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 eats both plants and animals
scavenger a carnivore that feeds on the bodies of dead organisms
decomposers organisms that break down wastes and dead organisms and return the raw materials to the environment
food chain a series of events in which one organism eats another and obtains energy
food web many overlapping food chains in an ecosystem
energy pyramid a diagram that shows the amount of energy that moves from one feeding level to another in a food web.
water cycle the continuous process by which water moves from Earth's surface to the atmosphere and back
evaporation liquid water absorb energy and change to the gas state
condensation a gas changes to a liquid
precipitation rain, snow, sleet, or hail
carbon - oxygen cycle the cycle of oxygen being released from plants, organisms taking in the oxygen, and releasing carbon dioxide which the plants use
nitrogen cycle the cycle where nitrogen in the air is fixed into a usable form for plants and organisms, and returned to the soil
nitrogen fixation changing free nitrogen gas into a usable form
nodules bumps on the roots of legumes where bacteria can change free nitrogen into a usable form
biogeography the study where organisms live
continental drift the very slow motion of the continents
dispersal the movement of organisms from one place to another
native species species that have naturally evolved in an area
exotic species a species that is carried into a new location
climate the typical weather pattern over a long period of time
weather day to day conditions in an area
Created by: Dcoleman