Holt Science and Technology: Life Science Chapter 18
Terms in this set (33)
the study of interactions of organisms and their enviorment
single living thing
all the same species
all the populations in an ecosystem, all the species
all biotic and abotic factors, all the communities and all abiotic factors
all places on earth where life exists, all the ecosystem
all energy is from the sun. it passes through producers, consumers, and decomposers.
plants. process photosynthesis. Get energy directly from the sun.
eat other organisms
plant and animal eaters
eat dead plants and animals
first in the energy pyramid
second in the nergy pyramid
break down organisms to simplest form
graphic that shows how energy flows from one organism to another
Graphic that show the feeding relationship between many organisms
unit of food energy
graphic that shows energy at each level of the food chain
As energy moves up the pyramid the number of organisms _________ .
only ______ energy is passed up the pyramid.
from bottom to top of the energy pyramid animals _______ in size.
largest population that an environment can support at any given time.
an organism that is killed and eaten by another organism.
an organism that eats all or part of another organism.
two different organisms live in close associataion with each other.
both species benifit.
one organism benefits and the other is uneffected.
one species benefits from the other species which is harmed.
two species evolve together and benefit both.
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