Biology / Unit 14 Bio 3481 short lesson, about 20 seconds
Ecology's Levels of Organization
Captions available
The idea
Ecology studies interactions among organisms and their environment across nested levels: organism, population, community, ecosystem, and biosphere.
In practice
A single oak tree is an organism; every oak of its species in a forest is a population; every species sharing that forest is a community.
Where people slip
A "population" in ecology means one species' individuals in one area, never a mixed group of different species.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Builds on
- Nothing. This is a starting point.
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