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Population & Feeding the World (types of farming (siltation: the…
Population & Feeding the World
The speed in which the population is increasing is decreasing.
Death rate, birth rate, and migration are all changes that affect population.
Medicine, sanitation, and natural disasters.
Demo: people
graphy: measurement
Demography
Age structure: classification of members of a population into gradually according to age or the distribution.
Carrying capacity: number of organisms a habitat can support.
ecological footprint: a calculation of how much land and how many resources each person on the plant requires to live.
exponential growth: when a population grows at a rate proportional to the size of the population.
substance agriculture: growing enough food to meet a family's needs.
draft animals: big animals to pull products.
domesticated: used more humanely, bred for human use.
industrial agriculture: machinery, few workers, consume more energy, cause more pollution, and watse.
crop yield: size of harvest from a particular crop.
pasture: land used for livestock grazing.
dead zone: area in the ocean where marine life cannot survive.
plantation agriculture: large plantation that usually grows one crop.
feedlot: small area where a large number of livestock are raised.
rangeland: land covered in grass where animals graze.
World food supply and nutrition
green revolution: a large increase in crop yields achieved by developing new varieties of plants.
types of farming
siltation: the buildup of soil in an aquatic ecosystem.
no- till farming: leaving the soil undisturbed.
contour farming: planting crops around curves to reduce erosion.
shelterbelt: a row of trees planted to help block wind.