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Science 10 chpt 3 set 2
n/a
12
Science
10th Grade
01/15/2011

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Cards

Term
Competition
Definition
when two organisms make use of the same resource so that their niches overlap
Term
Desert
Definition
the biome characterized by less than 25 cm of precipitation annually and sparse vegetation of small plants specialized to conserve water; occurs in North Africa, central Australia, southwestern North America, eastern Asia, and the southeast tip of South America
Term
Ecological succession
Definition
a gradual change in the types of plants that represent the structure of a community
Term
Elevation
Definition
refers to height above (or below) sea level
Term
Extinction
Definition
when a species is gone completely from Earth, or when so few individuals remain that reproduction is not possible
Term
Extirpation [EK-stur-PAY-shun]
Definition
the phenomenon of local extinction, which occurs when a species ceases to exist in one area but still exists elsewhere in the world
Term
Foreign species
Definition
species that are not native to a particular ecosystem; they are often able to out compete the existing native species for a particular niche
Term
Grassland
Definition
the biome characterized by rainfall between 25 and 75 cm per year supporting the growth of grasses
Term
interspecific competition
Definition
competition between different species
Term
Keystone species
Definition
a species whose presence plays an important ecological role in determining the types and numbers of other species in particular ecosystems; when these species are eliminated, the effects on the ecosystem are dramatic
Term
Latitude
Definition
the location of a place on Earth north or south of the equator, which is designated as zero (0) degrees
Term
Mimicry
Definition
a strategy whereby one species resembles another that is poisonous, dangerous, or distasteful to avoid predation; also refers to situations where two harmful species have similar coloration (e.g., bees and wasps)
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