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29 Cards in this Set

  • Front
  • Back
the day to day condition of Earth's atmosphere at a particular time and place.
refers to the average, year after year conditions of temperature and precipitation in a particular region.
Greenhouse effect
the natural situation in which heat is retained by the layer of greenhouse gases.
Temperate zones
betweeen the polar zones and the tropics
(between 66.5° and 90° North and South lattitudes
Tropical zone
near the equator, between 23.5° North and 23.5° South lattitudes.
Biotic factors
include the entire living cast of characters ith th which an organism might interact, including birds, trees, mushrooms, and bacteria-in other words, the ecological community.
Abiotic factors
Physical, or nonliving factors that shape the ecosystem
The full range of physical and biological conditions in which an organism lives and the way in which the organism uses those conditions.
Any necessity of life, such as water, nutrients, light,food, or space.
Competative exclusion principle
No two species can occupy teh same nich in the same habitat at the same time.
An interaction in which one organism captures and feds on another organism.
Any relationship in which two species live closely together.
Both species benefit from the relationship.
One member of the association benefits and the other is neither helped nor harmed.
One organsm lives on or inside another organism and harmes it.
Ecological succesion
Series of predictable changes that occurs in a community over time.
Primary succesion
On land, succesion that occurs on surfaces where no soil exists.
Pioneer species
The first species to populate the area.
Secondary succession
When a disturbance of some kind changes an existing community without removing the soil.
A complex of terrestrial communities that covers large area and is characterized by certian soil and climate conditions and particular assemblages of plants and animals.
Ability to survive under conditions that differ from their optimal conditions.
The climate in a small area that differs from the climate around it.
the leafy tops of tall trees- extending from 50 to 80 feet above the forest floor-form a dense covering.
A second layer of of shorter trees and vines.
A tree that sheds its leaves duing a particular season each year.
Produce seed-bearing cones and most have leaves shaped like needles.
A material formed from decaying leaves and other organic matter that makes soil fertile.
Along the northern edge of the temperate zone are dense evergreen forests of coniferous trees
a layer of permanently frozen subsoil