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Study Guide for Chapter 2 Vocab and Questions regarding the content of Chapter 2. This chapter is located in the 2004 version of the Glencoe Biology Dynamics of Life.


the study of interactions that take place between organisms and their environment


the portion of earth that supports living things

Abiotic Factors

all nonliving parts of an organism's environment

Biotic Factors

all the living organisms that inhabit an environment


a group of organisms, all of the same species, which interbreed and live in the same area at the same time

Biological Community

is made up of interacting populations in a certain area at a certain time


made up of interacting populations in a biological community and the community's abioic factors

Terrestrial Ecosystems

ecosystems located on land


the place where an organism lives out its life


all the strategies and adaptations a species uses in its enviornment, its purpose


The relationship in which there is a close and permanent association between organisms of different species


both species benefit for the relationship, +,+


a relationship in which one species benefits and the other neither benefits nor is harmed from it, +,0


a relationship where one species dervies benefit at the expense of another species, +,-


where organisms seek out and eat other animals


An organism that uses light energy or energy stored in chemical compounds. also called the producer


An organism that cannont make its own food and feeds on other organisms


break down complex compounds of dead and decaying plants an animals into simpler substances

Food Chain

a simple model that scientists use to show how matter and energy move through an ecosystem.

Trophic Level

each organism in a food chain represents a feeding step or ....

Food Web

shows all possible feeding relationships at each trophic level in a community


the total weight of living matter at each trophic level.


the study of plants and animals, including where they grow and live, what they eat, or what eats them is called__


heterotrophs that only feed on plants


heterotrophs that eat other heterotrophs


heterotrophs that do not kill for food, rather they eat animals that have already died


heterotrophs that eat both plants and animals

food chains and food webs

How does energy and matter flow through ecosystems

only a portion of the first transfer

The amount of energy remaining in the final transfers is___


a first order heterotroph is an organism that feeds on___

first order heterotroph

a second order heterotroph is an organism that feeds on___

ecological pyramid

a model to show the distribution of matter and energy within a community

total available energy in a community

The base of the ecological pyramid represents____

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