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Biology Ch2 Review
the study of interactions that take place between organisms and their environment
the portion of earth that supports living things
all nonliving parts of an organism's environment
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
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
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
a simple model that scientists use to show how matter and energy move through an ecosystem.
each organism in a food chain represents a feeding step or ....
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___
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____