chapter 54 ecosystems lecture outline overview ecosystems energy and matter an ecosystem consists of all the organisms living in a community as well as all the abiotic factors with which ...
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...Chapter ecosystems lecture outline overview energy and matter an ecosystem consists of all the organisms living in a community as well abiotic factors with which they interact dynamics involve two processes that cannot be fully described by population or phenomena flow chemical cycling enters most form sunlight it is converted to autotrophs passed heterotrophs organic compounds food dissipated heat elements are cycled among biotic components unlike recycled must powered continuous influx from external source usually sun flows through while cycles within them concept ecology emphasizes ecologists view transformers processors we can follow transformation grouping species into trophic levels feeding relationships obey physical laws law conservation states created destroyed but only transformed plants other photosynthetic convert solar total amount does not change stored molecules plus amounts reflected equal intercepted plant second thermodynamics some lost any conversion process for camp...