Human activities 0.0 / 5 ? BiologyEcology and biodiversityA2/A-levelWJEC Created by: SamCreated on: 24-01-14 13:32 What is biodiversity? Measure of the number of species on the planet 1 of 10 What is the main cause of extinction? human activity 2 of 10 What human activity causes a threat to large mammals? loss of habitat/ over hunting/ competition 3 of 10 what are species threatened by? natural selection/ deforestion/ pollution/ drainage of wet lands 4 of 10 reasons for deforestation wood used as fuel/ paper and packaging/ infrastucture 5 of 10 what is agricultural exploitation? the way in which food production has increased in efficiency and intensity to maximise the yield from the land to meet human needs 6 of 10 what conflicts can agricultural exploitation lead to? larger fields required hedgerows to be removed for large machinary 7 of 10 consequences of deforestation reduction in biodiversity/ soil erosion/ climate change 8 of 10 overfishing results in... higher harvesting rate/ loss of biodiversity/ depletion of younger fish 9 of 10 what is a superpest? envolved through drugs and pesticides which have eliminated competition 10 of 10
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