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Ecology Barbato
Ecology Flash Cards
| Question | Answer |
|---|---|
| What is Ecology? | The scientific study of interactions among organismsand their environment, or surroundings |
| What is a biosphere? | Combinined portions of the planet in which all life exists, including land, water, air, or atmosphere. |
| What is a species? | A group of organisnms so similar to one another that they can breathe 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 community? | Assemblages of different populations that live together in a defined area. |
| What is an ecosystem? | A collection of all organisms tha5t live in a particular place, togheter with their nonlivin, or physical, environment. |
| What is an autotroph? | Organisms that can capture enrgy 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 the various organisms in an ecosystem form a network of complex interactions. |
| What is a trophic level? | Each step in a food chain or food web. |
| What is biomass? | The total amount of living tissue within a given trophic level. |
| What is the biogeochemical cycle? | Allows elements, chemical compoundsm, and other forms of matter to pass from one organism to another and from one part of the biosphere, to another through this. |
| What is limiting nutrient? | When an ecostystem is limited by a single nutrient that is scarce or cycles very slowly. |
| What is weather? | The day to day condition of Earth's atmosphere at a particular time and place. |
| What is climate? | The average, year after year conditions of temperature and precipitattion in a particular area. |
| What is the greenhouse effect? | The natural situation in which heat is retained by this layer of greenhouse gases. |
| What is a biotice factor? | The biological influences on organisms within an ecosystem. |
| What is an Abiotic factor? | Physical, or nonliving, factors that shape ecosystems. |
| What is a niche? | The full range of physical ab biological conditions in which an organism lives and the way in which the organsism uses those conditions. |
| What is logistic growth? | Occurs when a populations growth slows or stops following a period of exponential growth. |
| What is carrying capacity? | The largest number of individuals in an environment. |
| What is demography? | The scientific study of human populations. |
| What is demographic transition? | A dramatic change in birth or death rates. |
| What is the green revolution? | The introduction of modern agricultural techiniques. |
| What is a renewable resource? | Can regenerate if they are alive or can be replenished by biochemical cyclesif 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 food web. |
Created by:
BBarbato
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