last topic test!! Flashcards
foodchain
showing the transfer of energy from one organism to the next, beginning with a producer
food web
a network of interconnected food chains
producer
an organism that makes its own organic nutrients, usually using energy from sunlight, through photosynthesis
consumer
an organism that gets its energy by feeding on other organisms
herbivore
an animal that gets its energy by eating plants
carnivore
an animal that gets its energy by eating other animals
decomposer
an organism that gets its energy from dead or waste organic material
trophic level
the position of an organism in a food chain, food web or ecological pyramid
population
a group of organisms of one species living in the same area, at the same time
community
all of the populations of different species in an ecosystem
ecosystem
a unit containing the community of organisms and their enviornment interacting together
biodiversity
number of different species that live in an area
sustainable resource
one which is prodduced as rapidly as it is removed from the environment so that it does not run out
genetic modification
changing the genetic material of an organism by removing, changing or inserting individual genes