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Rhythms of Life
Unit 3 Cycles of Nature
6
Science
7th Grade
10/28/2011

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Term
biological clock
Definition
help living things stay in step with rhythmic cycles of change in their environment
Term
diurnal
Definition
organisms that are active during the daytime hours
Term
nocturnal
Definition
organisms that are active during the night.
Term
migration
Definition
are annual rhythm in which organisms travel from the place where they breed to the place where they feed. (seasonal)
Term
hibernation
Definition
winter resting state for animals to survive extreme cold temperatures without food or water until the coming of spring.
Term
estivation
Definition
summer resting state for animals during extended months of harsh, hot, dry weather.
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