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36 Cards in this Set

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  • Back
biosphere
part of the earth that supports living organisms
ecology
study of the interactions between living and nonliving factors in the environment
abiotic factors
nonliving, physical features
biotic factors
living organisms
populations
individual organisms of the same species that live in the same place and can produce young
ecosystem
biotic community and abiotic factors
population density
the number of individuals per unit of living space
limiting factor
any biotic or abiotic factor that restricts the number of individuals in a population
carrying capacity
the largest number of individuals that an environment can support and maintain over time
biotic potential
the number of individuals each female of a population can produce under the best possible conditions
predator
the feeding of one organism on another
symbiosis
any close relationship between two or more different species
mutualism
a symbiotic relationship that benefits both species
commensalism
symbiotic relationship that benefits one partner but does not help or hurt the other partner
parasitism
symbiotic relationship that benefits the parasite and does definite harm to the parasite's host
habitat
physical location where an organism lives
niche
role of an organism in an ecosystem
producers
use the sun's energy to make food
consumers
obtain energy by eating producers or consumers
decomposers
break down the dead bodies to obtain energy
food chain
a simple way of showing how food passes from one organism to another
food web
overlapping food chains
energy pyramid
compares the energy available at each level of the food chain
competition
a struggle between organisms for the limited resources in an environment
social hierarchy
use of aggression to form a social order where higher level organisms have better access to food, mates, nests, etc...
territorial
defense of an area from other members of the same species
adaptation
characteristic of an organim that makes it better able to survive in its environment
cooperation
a population of oranisms working together for survival
imprinting
a social attachment to another organism soon after birth or hatching
mimicry
close outward resemblance of an animal or plant to its surroundings or to some other animal or plant
courtship
behaviors that help males and females of a species to recognize each other and prepare for mating
aggression
a forceful act used to dominate or control another animal
What are 4 important examples of abiotic factors?
water, soil, light, temperature
What mixture makes up soil?
clay, sand, hummus
What is hummus?
decayed remains of dead organisms
Community
Groups of different populations that interact with each other in a given area