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Bio Ecology 7.1.2&3

GCSE AQA Double Science Biology Unit 7 Ecology 7.1.2 Abiotic factors7.1.3 Biotic

QuestionAnswer
Define the term Abiotic Factor Non-living factor.
Define the term Biotic Factor Living factor
Examples of Abiotic (non-livng) factors Light intensity Temperature Moisture levels Soil pH and mineral content Wind intensity / direction Carbon dioxide levels Oxygen levels
How does the abiotic factor LIGHT INTENSITY affect a community? affects photosythesis (plants)
How does the abiotic factor TEMPERATURE affect a community? affects photosythesis (plants)
How does the abiotic factor MOISTURE LEVELS affect a community? affects survival of different species
How does the abiotic factor SOIL pH AND MINERAL CONTENT affect a community? affects growth (plants)
How does the abiotic factor WIND INTENSITY / DIRECTION affect a community? affects transpiration (plants)
How does the abiotic factor CARBON DIOXIDE LEVELS (for plants) affect a community? for plants - affects photosythesis
How does the abiotic factor OXYGEN LEVELS (for aquatic animals) affect a community? for aquatic animals - affects respiration
Examples of Biotic (living) factors Availability of food New predators New pathogens Competition
How does the biotic factor AVAILABILITY OF FOOD affect a community? affects ability of animals to survive and breed
How does the biotic factor NEW PREDATORS affect a community? kill prey
How does the biotic factor NEW PATHOGENS affect a community? kill organisms
How does the biotic factor COMPETITION affect a community? one species may outcompete another so numbers are no longer sufficient to breed
Created by: claurens
 

 



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