ecology Flashcards
ecology
the study of interactions between organisms and the environment
species
one type of organism
biotic factor
all the parts of the environment that are living
abiotic factor
All the parts of the environment that are nonliving.
habitat
the place where an organism lives in a community
population
all the organisms of the same species living in the same place same time
community
all the populations that live in the same place at the same time
ecosystem
a community that interacts with the abiotic parts of the environment
energy pyramid
diagram showing trophic level/ level in the food chain
sun
main source of energy for all living things
producer
makes its own food
photosynthesis
the process of food making in producers
consumer
an organism that eats other organism
herbivore
an organism that only eats plants
carnivore
an organism that only eats animals
scavenger
an organism that eats organism that are already dead
omnivore
an organism that eats both plants and animals
decomposer
an organism that breaks down the remains of dead plants and animals
food chain
the transfer of energy (food) from one organism to the other
food web
hen different chains overlap
competition
the contest of all living organisms to survive
niche
the job a species has with its community
predator
an organism that eats a kills prey to obtain energy
prey
an organism that gets eaten by predators
limiting factors
an environmental factor that causes the population to decrease
symbiosis
a relationship where food,shelter,support or transportation is provided for one or both organisms
natural selection
the struggle between organisms to survive in a habitat with limited resources
process in which a species becomes better suited to its everiment
