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Ecology Crance
Flashcards of ecology
| Question | Answer |
|---|---|
| What is ecology? | The scientific study of interactions among organisms and their environmet, or surroudings. |
| What is a Biosphere? | Combined portions of the planet in which all of life exists, including, land, water, air or atmosphere. |
| What is a species? | A group of organsims so similar to one another that they can breed and produce fertile offspring. |
| What is a Population? | Groups of individuals that belong to the same species and live in the same area., |
| What is a cimmunity? | Assemblages of different populations that live together in a defined area. |
| What is an ecosystem? | A collection of all organisms that live in a particular place, together with their nonlivung, or physical, environment. |
| What is an aoutotroph? | Organisms that can capture energy from sunlight or chemicals and use energy to produce food. |
| What is a Heterotroph? | Organisms that rely on other organisms for their energy and food supply. |
| What is a food web? | When the feeding relationships among various organisms in an ecosystem form a network of complex interacrtions ecologists describe these realtionships as food webs. |
| What is trophic level? | Each step in a food chain or web. |
| What is biomass? | The total amount of living tissue within a given trophic level. |
| What is giogeochemical cycle? | Alloes elements, chemical compounds, and other forms of matter to pass from one organism to another and one part of the biosphere to another through this. |
| What is a limiting nutrient? | When an ecosystem is limited by a single nutrient that is scarce or cylces very slow. |
| What is weather? | The day to day condition of Eartth's atmosphere of a particular time and place. |
| What is climate? | The average year after year conditions of temperature and precipitation in a particular are. |
| What is the green house affect? | The natural situation in which heat is retained by this layer of greenhouse gases. |
| What is biotic factor? | The biological influences on organisms within an ecosystem. |
| What is abiotic Factor? | Physical, or nonliving, factors that shape ecosystems. |
| What is a niche? | The full range of physical and biological conditions in which an organism lives amd the way in which the organism uses those conditions. |
| What is logistic growth? | Occurs when a poplations growth slows or stops following a periond of exponential growth. |
| Hwat is carrying capacity? | The largest number of individuals in given environment. |
| What is demography? | The scientific study of human populations. |
| What is demographic transition? | A dramtic change in dirth and death rates. |
| What is the green revolution? | The introduction of modern agricultural techniques. |
| What is a renewable resource? | Can regenerate if they are alive or can be replenished by biochemical cucles if they are nonliving. |
| What is a pollutant? | A harmful material that can enter the biosphere through the land air or water. |
| What is biodiversity> | The sum total of all genetically based variety of all organisms in the biosphere. |
| What is biological magnification? | When concentrations of a harmful substance increase in organisms at higher trophic levels in a food chain or web. |
Created by:
Hoyt Crance
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