Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
ecology duncan
3-1,3-2,3-3,4-1,4-2,5-1,5-3,6-1,6-2,6-3
| Question | Answer |
|---|---|
| Ecology | Scientific study of interactions among organisms and between organisms and their environmnent. |
| Biosphere | Part of Earth in which life exists including land, water, and air or atmosphere |
| Species | group of similar organisms that can breed and produce fertile offspring. |
| Population | group of individuals of the same speicies that live in the same area. |
| Community | assemblage of different populations that live together in a difined area |
| Ecosystem | collection of organisms that live in a particular place, together with their nonliving environment. |
| Autotroph | organism that can capture energy from sunlight or chemicals and use it to produce its own food from inorganic compounds |
| Heterotroph | organisims that rely other organisims for their energy and food supply |
| Food web | network of complex interactions formed by the feeding relationships amoung the various organisms in an ecosystem |
| Trophic level | step in food chain or food web |
| biomass | total amount of living tissue within a given trophic level |
| biogeochemichemical cycle | process by which elements, chemical compounds and other forms of matter are passed from one organism to another and from one part of a biosphere to another. |
| limiting nutrient | single nutrient that either is scarce or cycles very slowly, limiting growth of organisims in an ecosystem |
| weather | condition of earths atmosphere at a particular time and place |
| climate | average, year after year conditions of temperature and precipitin in a particular region. |
| green house effect | natural situation in which heat is retained in Earths atmosphere by carbon dioxide, methane, water vapor, and other gases. |
| biotic factor | biological influence on organisms within an ecosystem. |
| abiotic factor | physical, or nonliving, factor that shapes an ecosystem. |
| niche | full range of physical and biological conditions in which an organism lives and the way in which the organism uses those conditions |
| logistic growth | growth pattern in which a population's growth rate slows or stops following a period of exponential growth |
| carrying capacity | largest number of individuals of a population that a given environment can support |
| demography | scientific study of human populations |
| demographic transition | change in population from high birth and death rates to low birth and death rates |
| green revolution | development of highly productive crop strains and the use of modern agricultural techniques to increase yields of food crop |
| renewable resource | resource that can regenerate quickly and that is replaceable. |
| pollutant | harmful material that can enter the biosphere through the land, air, or water |
| biodiversity | biological diversity, the sum total of the variety of organisms in the atmosphere |
| biological magnification | increasing concentration of a harmful substance in organisms at higher trophic levels in food chain or food web |
Created by:
jduncan
Popular Biology sets