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Chapter 2 APES Crossword

Across
When an organism is completely wiped off of the planet.
All of the layers of the atmosphere where life exists.
the study of living organisms and how they interract with eachother as well as the nonliving world
When one organism (parasite) gains energy by living off of the other caled a host organism
A _____ species plays an integral role in maintaining an ecological community and can be used as an indicator species.
The genetically inheritable traits that make it more likely for offspring to survive.
Down
The first species to move into a previously lifeless terrain.
the variety of species, the genes they contain, and the ecosystem they live in
a community interacting with the abiotic and living factors in their environment
When two organisms interact and benefit from each other.
When a predator feeds on all or part of another organism.
Made up of primary consumers, secondary consumers, detritivores, and decomposers.