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...Environmental geology glg chapter ecology and study of relationships between living things their environments the control factors over distribution abundance health conditions o species a group individuals capable interbreeding population same in are community populations different area habitat where particular lives niche how makes its indigenous that found they evolved e g kangaroos australia exotic brought into an or region by humans either purposely accident invasive which compete with may replace biosphere part earth life exists biota all organisms geological processes effects on environment ecosystem ecological nonliving geologic energy flows chemicals such as nutrients water flow keller p succession systematic change evolves after large disturbance fire flood volcanic eruption starts from scratch primary new land surface lava adding to island hawaii gets populated secondary reestablishment previously existing ecosystems regrowth forest major balance nature static state is non ex...