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ecology solis

ecology

QuestionAnswer
Ecology The science study of interactions among organisms and between organisms and their enviroment,or surroundings.
Biosphere The biosphere contains the combined portions of the planet in which all of life exists, including land,water,and air, or atmosphere.
Species Group of organisms so similiar to one another that they can breed and produce fertile offspring.
Population Groups of individuals that belong to the same species and live in the same area.
Community Organisms living in the same area.
Ecosystem Collection of all organisms that live in a particular place together with their nonliving,or physical enviroment.
Autotroph Organisms that use energy from the sun or chemicals to create their own food.
Heterotroph Organisms that rely on other organisms for energy and food supply.
Food web The feeding relationship between various organisms in an ecosystem form a network of complex interactions.
Trophic level Each step in a food chain.
Biomass Total amount of living tissue within a given trophic level.
Biogeochemical cycle Connection of biological,geological and chemical aspects of biosphere.
Limiting nutrient WHen ecosystem is limited by a single nutrient that is scarce or cycles very slowly.
Weather The day-to-day condition of Earth's atmosphere at a particular time and place.
Climate Average year-adfter-year conditions of temperature and precipitaion in a particular region.
Green House Effect Heat is retained by green house gasses.
Biotic Factor The biological influences on organisms within an ecosystem.
Abiotic Factor Physical or non living factors that shape ecosystems.
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 A populations growth slows or stops following a period of exponental growth.
Carrying capacity The size of an oranganisms population when the average growth rate reaches zero.
Demography Scientific study of human population.
Demographic transition A dramatic change in birth and death rates.
Green revolution Modern agriculture techniques.
Renewable resources Can be regenerated.
Pollutant Harmful material that can enter the biosphere through land, air or water.
Biodiversity Sum total of all organisms in the biosphere.
Biological magnification Harmful substance increase in organisms at higher trophic levels.
Created by: jsolis
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