Domain Kingdom Phylum Class Order Family Genus Species are how organisms are classified under the taxonomy system. A species is defined as a group of organisms that are able to reproduce to produce fertile offspring. A hierachy is where large groups are divided into smaller subgroups with no overlap between the groups.
Biodiversity is the variety of all the life on Earth. An index of diversity describes the relationship between the number of species in a community and the number of individuals in each species. Conserving biodiversity is crucial for life Earth.
Farming practices must be moderated in order to conserve biodiversity yet also maximise profit and income. The removal of hedges, for example, reduces biodiversity of species that live within the hedges, however, this is done on the expense of greater farming area so more profit for farmers.
To investigate genetic diversity, direct investigations of DNA sequences has replaced inferring DNA differences from measurable or observable characteristics. The base sequence of DNA, mRNA or the amino acid sequence can be investigated.