1. Biodiversity
The variety of life in an area that is affected by abiotic and biotic conditions

2. Extinction When the last member of a species dies
Biodiversity health depends on genetic, species, and ecosystem diversity

3. Is genetic diversity Important?
Genetic diversity is the variety of genes within a species population.
The greater the diversity, the greater chance a species will survive disease , environmental changes, and decreases in food sources

4. Species Diversity
The number of different species and the abundance of those species in a biological community Ex. high (rainforest) low (polar regions)

5. Ecosystem diversity
The variety of ecosystems present in the biosphere – Different locations have different abiotic and biotic factors that affect species

6. Is biodiversity important to humans?
Preserving genetic diversity is extremely important to humans – food, clothing shelter, medicine and energy
Name 3 reasons why you believe biodiversity is important to humans

7. Indirect reasons to increase Biodiversity
Cleaning up ecosystems and water supplies costs less money in the long run, future medicine, preventing extinction of species

8. Background Extinction
Gradual process by which species become extinct caused by Humans, natural processes, climate change, natural disasters

9. Mass Extinctions
Many scientists believe we are in a period of mass extinctions because many species are becoming endangered in a short period of time

10. Extinction rates due to humans
Over exploration – excessive use of species for economic value
Over Exploitation – Humans over kill species for economic reasons
Ie: white rhinos – tusks, Siberian tigers - medicines, elephants – tusks, Whales oil

11. Habitat Loss Affects Biodiversity
Changing one thing in an ecosystem will affect many species. Cutting down plants in a rain forests leads to the extinction of many species

12. Pollution that Affects Biodiversity
Biological magnification occurs when there is high levels of toxins that buildup in the environment and affect species at higher trophic levels Ex - DDT, Acid from burning fossil fuels

13. Eutrophication
Pollution that affects underwater species and habitats ( oil spillage, pesticides, fertilizers, sewage)

14. Non Native or Invasive Species
They destroy habitats and ecosystems due to over populating the areas and taking over resources
Ex. Fire Ants, Zebra Mussels