| Question of the Week
December 22 marks the Winter Solstice - the shortest day and the longest night of the year in the northern hemisphere. Also referred to as first day of winter, it marks the beginning of the coldest season of the year. As temperatures drop, humans bundle up in coats, hats, scarves, and gloves.
The cold affects wild animals, too.
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Limiting factors are things that influence the life history of any animal, population of animals, or species. Limiting factors are categorized as either biotic (living) or abiotic (nonliving). Competition between animals for the same resource is an example of a biotic limiting factor. Temperature is an example of an abiotic limiting factor.
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Pennsylvania Environment and Ecology Standard |
4.6 Ecosystems and their Interactions
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Activities:
How Many Bears Can Live in this Forest?
Oh Deer!
Organisms and Their Environments
Which Niche?
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