Advertisement Upgrade to remove ads

Ecosystems: Everything is Connected, Evolution, the Diversity of Living Things


a community of organizms and their abiotic environment

biotic factors

an environmental factor that is associated with or results from the activities of living organisms (including plants, animals, and dead organisms)

abiotic factors

non-living factors including temperature, water, sunlight, wind, rocks and soil


a living thing; anything that can carry out life processes independently


a group of similar organisms that can mate with each other and produce fertile offspring


a group of organisms of the same species that live in a specific geographical area and interbreed


a group of various species that live in the same habitat and interact with each other


the place where an organism lives

natural selection

the process by which individuals that are better adapted to their environment survive and reproduce more successfully than less well adapted individuals do; a theory to explain the mechanism of evolution; also called survival of the fittest


a heritable change in the characteristics within a population from one generation to the next; the development of new types of organisms from preexisting types of organisms over time


the process of becoming adapted to an environment; an anatomical, physiological, or behavioral change that improves a population's ability to survive

artificial selection

the selective breeding of organisms (by humans) for specific desirable characteristics


the ability of one or more organisms to tolerate a particular chemical designed to kill it

The Kingdoms of LIfe

Archebacteria, Eubacteria, Fungi, Protists, Plants, Animals (AEFPPA - always eat fresh produce planted alive)


kingdom of unicellular prokaryotes that can live in extremely harsh conditions, lack pepdigloglycan in cell wall


In a traditional taxonomic system, a kingdom made up of all prokaryotes except members of the kingdom Archaebacteria; Currently, biologists prefer to classify members of this kingdom into the domain Bacteria


an organism whose cells have nuclei, rigid cell walls, and no chlorophyll and that belongs to the kingdom fungi


an organism that belongs to the kingdom protista; generally, a single-celled organism with a nucleus and organelles, including amoebas, euglenas, paramecia and volvox


a woody, vascular seed plant whose seeds are not enclosed by an ovary or fruit


a flowering plant that produces seeds within a fruit


an animal that does not have a backbone


an animal that has a backbone; includes mammals, birds, reptiles, amphibians, and fish

Flickr Creative Commons Images

Some images used in this set are licensed under the Creative Commons through Click to see the original works with their full license.

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again


Reload the page to try again!


Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording