Reasons for Maintaining Biodiversity Biodiversity is the?range and variety?of genes, species and habitats within a particular region It is made up of three components: Genetic diversity Species div...
Reasons for Extinction Extinction is when a?species comes to an end?or dies out Extinction is a natural biological process that happens on planet earth and studies of fossils and ancient DNA have s...
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...
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 ...
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 ...
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...
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...
前不久，2023年QS世界大學(xué)排名公布，英國(guó)TOP 10學(xué)校沒變但排位略有調(diào)整。 劍橋拿下了自2014年以來(lái)的最好排名，位列世界第2，英國(guó)第一；G5中，比較可惜的是LSE掉出了世界前50，盡管綜合排名下降，但LSE很多專業(yè)排...
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...
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...
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...
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...
