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Ecology Chp4

QuestionAnswer
ecology the study of the interaction between organisms and organisms and their environment.
climatic factors factors caused by the longterm weather conditions in an area that affect organisms
biosphere the parts of the planet in which organisms can live, lithosphere, atmosphere and biosphere
nutrient recycling the way in which elements are exchanged between the living and nonliving parts of an ecosystem
ecological niche the functional role of an organism in its ecosystem
pyramid of numbers diagram representing the number of organisms at each trophic level of a food chain
ecosystem a group of defined organisms and their interactions between each other and between each other and their environment
food web two or more interconnected food chains with more than one species at each trophic level
producers organisms that carry out photosynthesis
biotic factors living factors that affect organisms in an environment - food competition predation parasitism pollination humans
community all the different populations living in an area
habitat a place where a plant or animal lives
food chain A sequence of organisms in which an organism is consumed by the one that follows it in the sequence
consumer an organism that takes in its food from other organismsNit
conservation the wise management of our natural resources in order to maintain a wide variety of habitats and to prevent the death and extinction of other organisms
nitrogen fixation the conversion of nitrogen gas to ammonia/ammonium or nitrates
Nitrificaton the conversion of ammonia or ammonium to nitrites and then nitrates.
Denitrification conversion of nitrates to nitrogen gas
Name two methods by which nitrogen fixation occurs in nature: 1. By nitrogen fixing bacteria in root nodules 2. Lightning
Created by: serrraphina
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