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Final Chp 18
| Question | Answer |
|---|---|
| biodiversity | -the variety of ecosystems, species, and genes an alleles- in that order |
| intrinsic value | -value of biodiversity independent of its value to humans |
| ecosystem services (extrinsic values) | -value to biodiversity TO humans: -provisioning services -habitat services -regulating services -cultural services |
| provisioning services | -food -fresh water -medicine |
| habitat services | -habitats for species |
| regulating services | -air, water, and soil quality -carbon storage and climate regulation -pollution regulation |
| cultural services | -recreation and mental health -tourism -spiritual |
| factors that influence biodiversity | -solar energy available -evolutionary history of an area (the more time pass w/o climatic event, greater the diversity) -rate of disturbance (intermediate disturbance= species richness) |
| extinictions | -mass extinctions -background extinctions |
| mass extinction | -we are in one and we are causing it because of urban development and agriculture |
| damaging human activities | 1. introduced non-native species may wipe out native organisms 2. acid rain 3. greenhouse gasses 4. deforestation |
| invasive species | -a species introduced into an area it did not evolve in (non-native) that spreads widely and causes damage -unintentional or intentional -hard to get rid of |
| acid rain | 1. burning of fossil fuels release gases 2. they combine with water in the atmosphere creating the acid rain -damages ecosystems and structures -reduce our reliance on fossil fuels |
| deforestation | -agriculture is the main cause of this -loss of biodiversity -increase in greenhouse gasses -educate people better and finding alternatives for human populations |
| greenhouse gasses | -gasses in the atmosphere that trap heat energy -carbon dioxide -methane -burning of fossil fuels and clearing of land=cause -lead to ice cap melting, more severe droughts, spring blooms occur earlier |
| greenhouse effect | 1. energy from the sun passes through the atmosphere 2. some energy is reflected back to space and escapes the atmosphere 3. some energy is absorbed by greenhouse gasses and remains trapped in the atmosphere, heating the air -estimated 2-12F increase |
| ozone layer | -chemical (CFCs) leaked into the atmosphere -lead to health problems in animals and plants -in recovery due to recall of these chemicals |
Created by:
tcas