Competency 016 Life Science 238
Terms in this set (35)
Scientific study of interactions among organisms and between organisms and their environment
A group of individuals that belong to the same species and live in the same area
A group of interdependent organisms inhabiting the same region and interacting with each other
a broad, regional type of ecosystem characterized by distinctive climate and soil conditions and a distinctive kind of biological community adapted to those conditions.
An extremely dry area with little water and few plants
A biome found in the dry temperate interiors of continents. This biome is characterized by rich soil, moderate rainfall, a hot, dry climate, thick grasses, and herds of grazing animals.
a vast, flat, treeless Arctic region of Europe, Asia, and North America in which the subsoil is permanently frozen.
land dominated by trees and other woody vegetation and sometimes used for commercial logging
Forests in which rainfall is abundant - more that 200 cm (80 in) per year - and temperatures are warm or hot year-round
biome south of the boreal forest characterized by broad-leaved, deciduous trees, well-defined seasons, and average yearly precipitation of 75-150 cm.
An ecosystem that is located in bodies of water.
the largest of all the ecosystems. The ocean regions are separated into separate zones: intertidal, pelagic, abyssal, and benthic. All four zones have a great diversity of species.
The most diverse marine biome on Earth, found in warm, shallow waters beyond the shoreline.
A bay or drowned valley where a river empties into the sea
ponds and lakes
Form when water collects in hollows and low-lying areas of land
river and streams
a flowing body of water that continues to move; algae, liverworts, mosses, willows; trout, otters, salmon, snails.
a lowland area, such as a marsh or swamp, that is saturated with moisture, especially when regarded as the natural habitat of wildlife.
A series of predictable and orderly changes within an ecosystem over time.
An interaction in which one organism captures and feeds on another organism
Competition in ecosystems
when two organisms compete for the same resource. Each species carves out its own niche. (different types of birds trying to live in one tree)
A relationship in which two different organisms live in close association with each other
an association between two organisms in which one benefits and the other derives neither benefit nor harm.
symbiotic relationship in which both species benefit from the relationship
The continuous process by which water moves from Earth's surface to the atmosphere and back
The organic circulation of carbon from the atmosphere into organisms and back again
the series of processes by which nitrogen and its compounds are interconverted in the environment and in living organisms, including nitrogen fixation and decomposition.
The movement of phosphorus atoms from rocks through the biosphere and hydrosphere and back to rocks.
nonrenewable resources are fragile and must be conserved for future.
Toxins become more concentrated in successive trophic levels.
simplification food web
three major crops feed the word: corn, wheat, and rice. planting of these food is causing to wipe out habitats and push animals and plants from their native habitats , causing overpopulation or extinction
strip mining and the overuse of oil reserve have depleted these resources.
the presence in or introduction into the environment of a substance or thing that has harmful or poisonous effects.
a gradual increase in the overall temperature of the earth's atmosphere generally attributed to the greenhouse effect caused by increased levels of carbon dioxide, chlorofluorocarbons, and other pollutants.
A species whose numbers are so small that the species is at risk of extinction
The number of people in an area exceeds the capacity of the environment to support life at a decent standard of living.