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CyfarthfaB2Biodivers
Question | Answer |
---|---|
Definition of biodiversity | Variety of living things in an area |
Metre squared frame used to sample organisms | Quadrat |
An average of 10 daisies are found in a quadrat in a 75m2 field, estimate the number of daisies in the whole field | 750 |
Resonance for throwing quadrat at random | Avoids bias |
Reason for using quadrat numerous times during sample | Improve reliability by calculating average |
Equipment uses to sample how numbers of an organism changes from one part of an ecosystem to another | Transect |
Ways to conserve endangered species | Captive breeding, nature reserves, laws banning trade in animal products eg ivory, restricted access to breeding areas, |
Reasons for habitat destruction | Clearing land for agriculture/building, natural resources will. Eg wood, landfill, |