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Hunter Gatherers
small pop
migration
limited tech
small ecological print
agricultural revolution
urbanization
longer life span
habitat distruction
pollution
industrial revolution
coal
mass produced
inc urban pop
dangerous work
industrial agriculture
inorganic fertilizer
inexpensive fuel
irrigation
pesticides
green revolution
monocultures
lavishing fert, pest, h2o
cropping
subsistence agriculture
planting for family/ excess is sold/ not for marketplace
slash and burn
tree cut and burned, ash rejuvenates soil, short cycle repeated (not good now)
modern food protection
15 plant and 8 animal/ 90%
dust bowl
soil erosion/ desertification/ water deficits/ loss of biodiversity
soil conservation
reducing soil erosion/ covered in vegetation/ tilling
GMO
Bioengineering, gene transfer
Conventional
Plantation what we eat
Organic
No pesticides
History of pesticides
sulfer — heavy metals — plant derived — DDT — glyphosate
benfits
low cost/ inc food/ more profit
bioaccumulation
accumulates in an individual
biomagnification
goes up the food chain
LD 50
amt of pollutant needed to kill ½ of population
Treadmill
The next generation is stronger bc of natural selection
IPM
Not to kill, but to keep manageable
IPM three types
Physical- Gate/fence
Biological- buy ladybugs
Chemical- scent/ faremade
Silent Spring
affect of DDT on environment (songbirds)
FIFRA
any pesticide must be registered
Food Quality Protection Acts
no adverse effect to humans
Acid Mine Drainage
Acid drainage from sulfur seeps into the water and makes sulfuric acid. This can contaminate the water and harm wildlife. In our video, we showed this by having the “acid drainage” come towards the pond with a fish, cover the pond, and kill the fish.
Impact on Groundwater
Pollution from the mining process can seep into the groundwater, making it unsafe to drink and harmful to the ecosystem. In our video, we showed this by having the pollutants seep through the layers of the soil into the water table, and then soaking up through the roots to kill a flower.
Overburden
Overburden is the soil and vegetation that covers the mineral being mined for. In our video, we showed this by creating the layers of the soil and labeling overburden vs. coal.
Habitat Degradation
Pollution from the mining process can impact habitats as well. Toxic smoke in the air can kill birds and other winged creatures, dumped solute in water can increase turbidity, and destroyed areas can result in a loss of biodiversity. In our video, we showed this by having toxic pollution rise into the sky and kill a bird flying past.
Reclamation
After digging into the Earth, it’s important to restore the land to how it originally was. However, it’s impossible to remake the ground exactly how it was before, which can lead to contamination, erosion, and habitat loss. We showed this by having the soil and vegetation be filled back in, but not staying in the lines of the layers we originally had.
Mountaintop Removal and Natural Resources
The mountaintop removal method of mining is done by using explosives to blast away the top of the mountain, revealing the minerals underneath. In our video, we showed this by having the top of the mountain get blasted off. In addition, we wanted to use this as an example of the natural resources that come from mining, so we had a piece of coal come out of the mountain and catch on fire.
Pit Mining and Natural Resources
The pit mining removal method of mining is done by excavating large holes in the ground to get to large groupings of minerals close to the surface. In our video, we showed this by having a hole in the cross section of the mountain. Like in mountaintop removal, we also used this as a way to show a natural resource.
Strip Mining and Natural Resources
The strip mining method of mining is done by removing long strips of overburden to get to the resources underneath. In our video, we showed this by having strips of the mountain come off. To follow our method for the other two types of mining, we also showed a natural resource coming out of the mountain: phosphorus.