Ecology flashcards 0.0 / 5 ? BiologyEcology and biodiversityEcology, ecosystems and environmental biologyA2/A-levelAQA Created by: minaCreated on: 08-01-14 14:58 What is a Population ? All of the organisms of one species in one habitat at a particular time. 1 of 15 What is the definition of a habitat ? A place where a community of organisms are found. 2 of 15 What is an ecosystem ? A self-contained unit that includes community and non-living environmental factors. 3 of 15 What is the difference between interspecific and intraspecific ? interspecific is competiton between members of different populations intraspecific is between the same population for resources. 4 of 15 What is an advantage of random sampling ? It removes bias. 5 of 15 What information is required to calculate growth rate ? Number of births and immigration, number of deaths and emigration. 6 of 15 What are the advantages of pyramids of biomass ? More quantitative and reliable. 7 of 15 What is the definition of a trophic level ? The different feeding levels in a food web. 8 of 15 What are the advantages of biological agents ? Stops specific pests, environmentally friendly. 9 of 15 What are the advantages of intensive rearing of livestock ? Increase in profit and increase production of meat. 10 of 15 What is the definition of assimilation ? The conversion of nutrients into living tissue. 11 of 15 What two forms Nitrogen can be fixed into ? Nitrate ions and Ammonium ions. 12 of 15 What is Nitrogen fixation ? converting Nitrogen gas into a useful compound. 13 of 15 What is Nitrification ? The addition of Oxygen to ammonium ions to produce nitrites and nitrates. 14 of 15 What is Denitrification ? Conversion of nitrites into nitrogen gas. 15 of 15
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