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Ecology-NickVillani

Honors Biology-

QuestionAnswer
CHAPTER 3 Ecology study of interactions among organisms,between organisms, and their environment
Biosphere combined portions of planet in which all life exists
species group of organisms so similar they can breed and produce fertile off spring
population groups of individuals that belong to same species and live in same area
community assemblages of different populations that live together in a defined are
ecosystem a collection of all the organisms that live in a particular place,together with their nonliving,or physical,environment
autotroph organisms that capture energy from sunlight and use that energy for food
heterotroph organisms that relyon other organisms for energy and food
food web when feeding relatioships among various organisms in an ecosystem form a network of complex interactions
trophic level each step in a food chain or food web
biomass the total amount of living tissue within a given trophic level
bigeochemical cycle matter is recycled within and between ecosystems
limiting nutrient when ecosystem limited by a single nutrient that is scare or cycles very slowly/ which means rate of production slow
CHAPTER 4 weather day to day condition of Earths atomsphere at a particular tijme and place
climate average, year after year conditions of temperature and precipitation in a particular region
green house effect natural situation in which heat is retained by this layer of greenhouse gases
biotic factor biological influences on organsisms within an ecosystem
abiotic factor nonliving 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
CHAPTER 5 logistic growth occurs when a populations growth slows or stops following a period of exponential growth
carrying capacity what is carrying capacity? (have itexplained)
demography study of human populations
demographic transition a dramatic change in birth and death rates
CHAPTER 6 green revolution modern agricultural techniques such as monoculture and use of chemical fertilization greatly increasing world's food supply
renewable resource can regernerate if they are alive or can be replenished by biochemicals cycles if theyy are nonliving
pollutant harmful material that can enter the biosphere thourgh land, air, or water
biodiversity sum total of the genetically based variety of all organisms in the biosphere
biological magnification process where concentrations of a harmful substance increase in organisms at higher trophic levels in a food chain or food web
Created by: 13nick57
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