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Dangers to our Environment
vocabulary
19
Science
4th Grade
11/06/2012

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Term
an organism that breaks down wastes and the remains of other organisms
Definition
decomposer
Term
any organism that eats the food producers make or eats other consumers
Definition
consumer
Term
any evidence of an organism that lived in the past
Definition
fossil
Term
a developing organism that results from fertilization
Definition
embryo
Term
a material that helps support life on Earth...soil, water, sunlight, air, coal, oil and wood.
Definition
resources
Term
said of an organism no longer alive on Earth
Definition
extinct
Term
change in living things over time
Definition
evolution
Term
the living part of an ecosystem
Definition
community
Term
the living and non-living things in an environment and all their interactions
Definition
ecosystem
Term
the home of an organism
Definition
habitat
Term
one type of organism living in an area
Definition
population
Term
the set of steps in which organisms get the food they need to survive
Definition
food chain
Term
a depletion of resources that occurs when too many of at least one kind of living thing inhabits an ecosystem
Definition
overpopulation
Term
the adding of harmful substances to the water, air, or land
Definition
pollution
Term
harmful moisture that falls to Earth after being mixed with wastes from burned fossil fuels
Definition
acid rain
Term
a long period of time with little or no precipitation
Definition
drought
Term
an organism, such as a plant, that makes food
Definition
producer
Term
the pattern that shows how food chains are related
Definition
food web
Term
the study of how living and non-living things interact
Definition
ecology
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