Environmental Science Chapter 4

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ecosystem
all of the organisms living in an area together with their physical environment
biotic factors
living things (animals, fungi, bacteria, plants)
abiotic factors
nonliving things (air, water, rocks, sand, light)
organism
an individual living thing
species
a group of organisms that can mate to produce fertile offspring
population
a group of the same species that live in the same place
community
a group of various species that live in the same place & interact with each other
habitat
the place an organism lives
natural selection
the process by which individuals that are better adapted to their environment survive & reproduce with more success than less well adapted individuals
evolution
a change in the genetic characteristics of a population from generation to the next
adaptation
an inherited trait that increases an organisms chance of survival & reproduction in a certain environment
resistance
the ability of one or more organisms to tolerate a particular chemical designed to kill it
archaea
often found in extreme places (hot springs)
bacteria
very common & can be found in many places (soil & animal bodies
fungus
an organism whose cells have nuclei & cell walls
protists
a diverse group of both unicellular & multicellular organisms
gymnosperms
woody plants that produce seeds, but their seeds are enclosed in fruits
angiosperm
flowering plants that produce seeds in fruit
invertebrates
animals without a backbone
vertebrates
animals that have backbones
artificial selection
Breeding organisms with specific traits in order to produce offspring with identical traits.

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