Biodiversity & Natural resources

• Anatomical adaptations are physical adaptations either internal or external
• Behavioral adaptations are changes in behavior that increase an organisms chance of survival
• Physiological adaptations are processes that increase an organisms chance of survival e.g. lowering heart rate in hibernation
• species richness is the number of different species in a habitat
• species evenness describes the commonness or rarity of a species
• index of diversity is a measure that shows how many different species there are
• Endemic: a plant or an animal native or restricted to a certain place
• Biodiversity hotspot: region that contains a high level of species diversity
• Genetic diversity: number of alleles in one species
• Heterozygosity index: measure genetic diversity within a species
• a phenotype is a physical characteristic of an organism that is expressed
• Niche: is a role taken by a type of organism within its community
• Selection pressure: something that decides what remains and what doesnt
• Allopactic speciation: occurs when populations of the same species become reproductively isolated reducing gene flow between two populations
• seasonal changes: different flowering or mating seasons
• Mechanical changes: changes in genitalia prevent successful mating
• Behavioral changes: develop courtship rituals that aren't attractive to the main population e.g. mating calls