Biology Chapter 2: Principles of Ecology Flashcards

The portion of Earth that supports life.

The living factors in an organism's environment.

<p>The nonliving factors in an organism's environment.</p> Signup and view all the answers

<p>Individual organisms of a single species that share the same geographic location at the same time.</p> Signup and view all the answers

<p>A group of interacting populations that occupy the same geographic area at the same time.</p> Signup and view all the answers

<p>A biological community and all of the biotic and abiotic factors that affect it.</p> Signup and view all the answers

<p>A large group of ecosystems that share the same climate and have similar types of communities.</p> Signup and view all the answers

<p>Where an organism lives.</p> Signup and view all the answers

<p>A role or position that an organism has in its environment.</p> Signup and view all the answers

<p>The act of one organism consuming another organism for food.</p> Signup and view all the answers

<p>The close relationship that forms when two or more species live together.</p> Signup and view all the answers

<p>A relationship between two or more organisms that live closely together and benefit from each other.</p> Signup and view all the answers

<p>A relationship where one organism benefits and the other is neither hurt nor helped.</p> Signup and view all the answers

<p>A relationship where one organism benefits at the expense of another.</p> Signup and view all the answers

<p>An organism that collects energy from sunlight or inorganic substances to produce food.</p> Signup and view all the answers

<p>An organism that gets its energy requirements from consuming other organisms.</p> Signup and view all the answers

<p>A heterotroph that only eats plants.</p> Signup and view all the answers

<p>A heterotroph that preys on other heterotrophs.</p> Signup and view all the answers

<p>A heterotroph that eats both plants and animals.</p> Signup and view all the answers

<p>An organism that eats fragments of dead matter in an ecosystem and returns nutrients to the environment.</p> Signup and view all the answers

<p>Step in a food chain or web.</p> Signup and view all the answers

<p>A simple model that shows how energy flows through an ecosystem.</p> Signup and view all the answers

<p>A model representing the many interconnected food chains and pathways in which energy flows through a group of organisms.</p> Signup and view all the answers

<p>The total mass of living matter at a trophic level.</p> Signup and view all the answers

<p>Anything that has mass and takes up space.</p> Signup and view all the answers

<p>A chemical substance that an organism must obtain from its environment.</p> Signup and view all the answers

<p>The exchange of matter through the biosphere.</p> Signup and view all the answers

<p>The process of capturing and converting nitrogen into a form that is usable by plants.</p> Signup and view all the answers

<p>The conversion by bacteria of fixed nitrogen compounds to nitrogen gas.</p> Signup and view all the answers