LAND & WATER USE (10-15 %). Agriculture Feeding a growing population. Human nutritional needs: 2000-2500 calories/day, less is undernourishment (famines are acute incidents of undernourishment catalyzed by war or environmental devastation)
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The LD50 is the dose that kills half (50%) of the animals tested (LD = "lethal dose").
Old Forest- 100 + years old.
Even Aged- tree farms
Uneven Aged- Natural Forest
Deforestation- removal of trees
* Slash and Burn
Fragmentation- disruption of habitat
* Benefits- Return nutrients, rid of pest & disease
Urban Blight- run down urban areas- “projects”
- 75 % consumed as food.
Long line fishing
Fig. 10-17, p. 216