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Chapter 1
Living Things Need Energy
16
Science
4th Grade
10/19/2009

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Cards

Term
Food Web
Definition
A group of food chains linked together
Term
Competition
Definition
The struggle of several organisms for the same resource
Term
Population
Definition
All the members of a single type of organism in an environment
Term
Energy Pyramid
Definition
A model that shows how huch energy flows through a food web
Term
Microorganism
Definition
Living things too small to be seen with our eyes
Term
Bacteria
Definition
The smallest microorganism
Term
Protists
Definition
A group of organisms that can be helpful or harmful.
Term
Fungi
Definition
A kind of decomposer
Term
Food Chain
Definition
Shows how energy passes from one food organism to another
Term
Producers
Definition
Green plants in a food chain that make their own food
Term
Consumers
Definition
Animals that cannot make their own food, so they consume plants or other animals
Term
Decomposers
Definition
Tiny living things that break down organisms and return nutrients to the soil
Term
Photosynthesis
Definition
A process in which plants make their own food
Term
Solar Energy
Definition
Energy from the sun
Term
Environment
Definition
Everything that surrounds a living thing
Term
Biomass
Definition
A measure in the amount of living things in an environment
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