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Chapter 2
Living Things and Their Environment
9
Science
4th Grade
11/12/2009

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Cards

Term
Ecosystem
Definition
All the interacting parts of an environment
Term
Biotic factors
Definition
The living things that shape an ecosystem
Term
Abiotic factors
Definition
Nonliving things that shape an ecosystem
Term
Emergent
Definition
The tops of the tallest trees
Term
Canopy
Definition
Just below the emergent layer, most animals live here because there is a lot of sunlight and food
Term
Understory
Definition
The area beneath the canopy, not very much light is here, leopards, frogs, jaguars, and insects live in the understory
Term
Forest floor
Definition
darker than the understory, little sunlight and plants, decomposers work quickly here
Term
Pollination
Definition
When male cells are transported to female cells in a flower
Term
Seed dispersal
Definition
the process of spreading seeds so they can grow into new plants
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