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Population growth (Agriculture is the process of modifying the enviornment…

- - - - Subsistence agriculture
        
        growing enough food to meet a family's needs, including livestock.
        
        Draft animals: large animals used to pull equipment.
        
        Domesticated: bred for human use.
        
        Pasture: land used for livestock grazing.
        
        Crop yield: size of harvest from a particular crop.
        
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  - - - Contour farming: planting crops around curves to reduce erosion soil.
        
        Siltation: the build up of soil in an aquatic ecosystem.
- - - - Organic food can not be genetically modified or treated with radiation.
        
        Radiation kills germs so its used to give food a longer shelf life.
        
        Organic farming can make the soil more fertile; balance insect populations can reduce pollution in the air, soil, and water.
- - - - Aton Van Leeuwenhoek was the father of micro biology. He was the first modern scientist to propose the germ theory of disease in 1700. (Vaccinations)
        
        He took a guess that earths carrying capacity is 13.4 billion people.