CIE A Level Biology复习笔记18.2.7 Simpson's Index
Simpson's Index Once the abundance of different species in an area has been recorded the results can be used to calculate the species diversity or biodiversity for that area Species diversity looks...
CIE A Level Biology复习笔记18.2.6 Spearman's Rank Correlation
Spearman's Rank Correlation If there is an apparent relationship between two variables but the data does not show a normal distribution, Pearson’s linear correlation coefficient should not be used ...
CIE A Level Biology复习笔记18.2.5 Pearson's Linear Correlation
Pearson's Linear Correlation When recording the abundance and distribution of species in an area different trends may be observed Sometimes correlation between two variables can appear in the data ...
CIE A Level Biology复习笔记18.2.4 Testing for Distribution & Abundance
Testing for Distribution & Abundance The distribution of a species describes how it is spread throughout the ecosystem The abundance of a species is the number of individuals of that species Th...
CIE A Level Biology复习笔记18.2.3 Random Sampling
Random Sampling Measuring the different levels of biodiversity within an ecosystem can be a tasking job Finding out which species live in an ecosystem and the size of the populations requires the i...
CIE A Level Biology复习笔记18.2.2 Biodiversity
Biodiversity Biodiversity can be thought of as a study of all the variation that exists within and between all forms of life Biodiversity looks at the range and variety of genes, species and habita...
CIE A Level Biology复习笔记18.2.1 Ecosystems & Niches
Ecosystem & Niches Ecosystems Species do not exist by themselves in their own isolated environment, they interact with other species forming communities These communities interact with each oth...
CIE A Level Biology复习笔记18.1.5 Viruses
Viruses Viruses are microorganisms that can only be seen using an electron microscope They have no cellular structure (and so are acellular and no metabolism Viruses hijack the DNA replication mach...
CIE A Level Biology复习笔记18.1.4 Kingdoms
Kingdoms The domain Eukarya can be divided into 4 kingdoms: Protoctista Fungi Plantae Animalia Organisms from each of the four kingdoms have distinct characteristics and features, but share similar...
