3rd Grade Science - Life Science
Characteristics of Organisms
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Recognize that organisms have basic needs (i.e., air, water, and food for
energy)
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Recognize that all organisms are made of one or more cells
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Recognize basic cellular structures that plant and animal cells share
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Recognize the differences among cells, tissues, organs and system
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Recognize the relationships among organisms in a specific ecosystem
(i.e., pollination and seed dispersal)
Diversity & Adaptation of Organisms
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Recognize that organisms can only survive in environments where their
needs can be met or where the organism can adapt to the changes in the
environment
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Recognize that plants or animals are grouped according to similarities
and the differences in their characteristics
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Recognize that there are characteristics that help organisms adapt and
survive in their environments
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Recognize that fossils show connections between organisms that live in
the present
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Recognize that organisms can become extinct
Cell Structure & Function
Life Cycles
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Recognize that all living things have life cycles (including birth,
developing into an adult, reproducing, and dying)
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Recognize that reproduction is necessary for the survival of a species
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Recognize that certain characteristics are passed from parents to
offspring
Populations & Ecosystems
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Recognize that plants and animals serve different functions in their
environments
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Recognize that animals eat plants or other animals for energy and may use
plants or other animals for shelter/nesting
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Recognize that there relationships among organisms in a specific ecosystem
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Recognize that organisms are impacted by and are able to change with
their environment
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Recognize the relationships within food chains
Organism & Environment
Regulations & Behavior