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ecologychoe
ecology
| Question | Answer |
|---|---|
| What is ecology? | The scientific study of of interactions among organisms and between organisms and their environment, or surroundings. |
| What is the biosphere? | Contains the combined portions of the planet in which all of life exists, including land, water, and air, or atmosphere. |
| What is a species? | A group of organisms so similar to one another that they can breed and produce fertile offspring. |
| What is 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 the organisms that live in a particular place, together with their nonliving, or physical environment. |
| What is an autotroph? | Use energy from the environment to fuel the assembly of simple inorganic compounds into complex organic molecules. |
| What is heterotroph? | Organisms that rely on other organisms for their energy and food supply. |
| What is a food web? | Links all the food chains in an ecosystem together. |
| What is a trophic level? | Each step in a food chain or food web. |
| What is a biomass? | The total amount of living tissue within a given trophic level. |
| What is a biogeochemical cycle? | Cycle where elements, chemical compounds, amd other forms of matter are passed from one organism to another and from one part of the biosphere to another. |
| What is a limiting nutrient? | A nutirent that limits an ecosystem and is scarce and cycles slowly. |
| What is weather? | The day-to-day condition of the Earth's atmosphere at a particular time and place. |
| What is climate? | The average, year-after-year conditions of temperature and precipitation in a particular region. |
| What is the green house effect? | The natural situation in which heat is retained by a layer of greenhouse gases. |
| What is a biotic 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 and biological conditions in which an organism lives and the way in which the organism uses those conditions. |
| What is logistic growth? | Occurs when a population's growth slows or stops following a period of exponential growth. |
| What is a carrying capacity? | The number that represents the largest number of individuals that a given environment can support. |
| What is demography? | The scientific study of human populations. |
| What is demographic transition? | A dramatic change in birth and death rates. |
| What is green revolution? | When modern agricultural techniques were introduced, such as monoculture and the use of chemical fertilizers that greatly increased the world's food supply. |
| What is a renewable resource? | Can regenerate if they are alive or can be replenished by bio-chemical cyles if they are nonliving. |
| What is a pollutant? | A harmful material that can enter the biosphere throuh the land, air, or water. |
| What is biodiversity? | The sum of the total of the genetically based variety of all organisms in the biosphere. |
| What is biological magnification? | When concentrations of a harmful substance increases in organisms at higher trophic levels in a food chain or food web. |
Created by:
tchoe
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