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Update Unit_3_Ecology_Study_Sheet.md

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James Su 2019-06-24 15:25:07 +00:00
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Grade 9/Science/SNC1DZ/Unit_3_Ecology_Study_Sheet.md
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@ -487,6 +487,11 @@ efficiency varies from `5%` to `20%` energy available between successive trophic
- Absorb water and slowly release it into the groundwater and surface water (reduces erosion and protects against flooding, filters the water).
- Protect land from storms along coasts where wave damage erodes the shoreline.
- Mangroves.
- **Monetary Values**
- Very difficult to put a dollar value on it
- Dollar value of cleaning the air/water, moderating climate and providing paper fibre, medicinesand other products is HIGH
- Ranges into trillions dollars/year (maybe 60 trillion?)
- Provides valuable services that are free and renewable.
### Pesticides
- Pesticides can easily flow through food chains as there are not easily excreted, like DDT. There are fat-solutable.