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Science Flashcards #2
N/A
15
Science
7th Grade
09/23/2011

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Term
Water Cycle
Definition
The continuous processs by which water moves from the Earth's surface and back.
Term
Producer
Definition
An organism that makes its own food.
Term
Consumer
Definition
An organism that obtains energy by eating other organisms.
Term
Decomposer
Definition
An organism that breaks down wastes and dead organisms and returns raw materials to the environment.
Term
Herbivores
Definition
Consumers that eat only plants.
Term
Carnivores
Definition
Consumers that eat only animals.
Term
Omnivores
Definition
Consumers that eat both plants and animals.
Term
Scavenger
Definition
A carnivore that eats bodies of dead organisms.
Term
Evaporation
Definition
The process in which water turns into a gas.
Term
Condensation
Definition
The process in which gas turns into a liquid.
Term
Precipitation
Definition
When water vapor condenses and falls to Earth as rain, snow, sleet , or hail.
Term
Nitrogen Fixation
Definition
The process of changing free nitrogen into a usable form of nitrogen.
Term
Food Chain
Definition
A series of events in which one organism eats another organism to obtain energy.
Term
Food Web
Definition
The overlapping food chains in an ecosystem.
Term
Energy Pyramid
Definition
A pyramid that shows the amount of energy from one feeding level to the next in a food web.
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