Endangered species - Animals that are close to extinction because of their low numbers., Habitat - A place where plants, animals and microorganisms live., Quadrat - A square frame of known area used for sampling the abundance and distribution of slow or non-moving organisms., Species abundance - The total number of individuals of one species (eg daisies) is recorded., Species richness - The number of different plant or animal species is recorded but not the number of individuals within a species., Species distribution - Where the organisms are found within an area, Random sampling - The placing of quadrats at random coordinates., Transect - A line created, for instance, with a tape measure, along which sampling occurs., Bias - Prejudice or favour shown for one person, group, thing or opinion over another.,

Sampling an ecosystem

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恢復自動保存: ?