Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Chapter 1
Populations and Communities
| Question | Answer |
|---|---|
| organism | a living thing |
| habitat | an environment that provides the things that an organism needs to live,grow,and reproduce |
| biotic factor | the living parts of a habitat |
| abiotic factor | the nonliving parts of a habitat |
| photosynthesis | to make their own food |
| species | a group of organisms that are physically similar and can mate with each other and produce offspring that can also mate and reproduce |
| population | the members of one species in a particular area |
| community | all the different populations that live together in an area |
| ecosystem | the community of organisms that live in a particular area, along with their nonliving surroundings |
| ecology | the study of how living things interact with each other and the environment |
| estimate | an approximation of a number, based on reasonable assumptions |
| birth rate | the birth rate of a population is the number of births in a population in a certain amount of time |
| death rate | the number of deaths in a population in a certain amount of time |
| immigration | moving in to a population |
| emigration | leaving a population |
| population density | the number of individuals in an area of a specific time |
| limiting factor | an environmental factor that causes a population to decrease |
| carrying capacity | the largest population that an area can support |
| natural selection | a characteristic that makes an individual better suited to it's environment may eventually become common in that species through a process called natural selection |
| adaptations | the behaviors and physical characteristics that allow organisms to live successfully in their environments |
| niche | the role of an organism in it's habitat , or how it makes it's living, is called niche |
| competition | the struggle between organisms to survive as they attempt to use the same limited resource |
| predation | an interaction in which one organism kills another for food |
| predator | the organism that does the killing is the predator |
| prey | the organism that is killed is the prey |
| symbiosis | symbiosis is a close relationship between two species that benefits at least one of the species |
| mutualism | the relationship in which both species benifit is called mutualism |
| commensalism | a relationship in which one species benifits and the other species is neither helped nor harmed is called commensalism |
| parasitism | involves one organism living on or inside another organism and harming it |
| parasite | the organism that benifits is called a parasite |
| host | the organism it lives on or in is called a host |
| succesion | the series of predictable changes that occur in a community over time |
| primary succesion | the series of changes that occur in an area where no soil or organisms exist |
| pioneer species | the first species to populate the area are called pioneer species |
| secondary succesion | the series of changes that occur in an area where the ecosystem has been disturbed, but where soil and organisms still exist |
Created by:
arank
Popular Science sets