Biodiversity & Extinction Flashcards

when an organism changes in response to changes in the environment to improve its chances of survival

a healthy environment in which every organism has the resources it needs to survive

the number and diversity of species on Earth

a region where a large number of species are concentrated in one area, and many of those are endangered

a group of living things working together in a particular place

when one organism doesn't get the resources it needs and another does

when organisms work together to get resources

the most diverse marine ecosystem that contains ¼ of all marine species in less than 1% of the marine habitat

the system that contains a community of organisms interacting within an environment

a species whose numbers have fallen so low that it's likely to become extinct in the future

a species whose members have all died out

a series of organisms that are related by what they eat

the space an organism needs to survive; where an organism lives

a species that is very important to an ecosystem because many other organisms are connected to it

what an organism does in an environment; its job

an individual living thing

all the organisms from one species living together in a specific place

the most diverse land ecosystem; contains about 50% of all land species

a group of individuals that are able to reproduce together and that resemble each other in appearance, behavior, and internal structure

a change in an environment that causes a shortage of habitat or other resources so that not all species have enough of what they need