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Chapter 4 - Ecosystems: everything is connected

Ecosystems: Everything is Connected, Evolution, the Diversity of Living Things
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ecosystem
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
organism
a living thing; anything that can carry out life processes independently
species
a group of similar organisms that can mate with each other and produce fertile offspring
population
a group of organisms of the same species that live in a specific geographical area and interbreed
community
a group of various species that live in the same habitat and interact with each other
habitat
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
evolution
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
adaptation
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
resistance
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)
Archebacteria
kingdom of unicellular prokaryotes that can live in extremely harsh conditions, lack pepdigloglycan in cell wall
Eubacteria
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
Fungus
an organism whose cells have nuclei, rigid cell walls, and no chlorophyll and that belongs to the kingdom fungi
Protist
an organism that belongs to the kingdom protista; generally, a single-celled organism with a nucleus and organelles, including amoebas, euglenas, paramecia and volvox
gymnosperm
a woody, vascular seed plant whose seeds are not enclosed by an ovary or fruit
angiosperm
a flowering plant that produces seeds within a fruit
invertebrate
an animal that does not have a backbone
vertebrate
an animal that has a backbone; includes mammals, birds, reptiles, amphibians, and fish

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