Page 1
Where does our food come
from?
• Croplands (mostly grain) – provide 77%
of the world’s food
• Rangelands (meat) supply 16%
• Oceanic fisheries (fish and shellfish) –
7%
Page 2
Where does our food come
from?
• Croplands (mostly grain) – provide 77%
of the world’s food
• Rangelands (meat) supply 16%
• Oceanic fisheries (fish and shellfish) –
7%
How Is Food Produced?
• Sources of food
• Primary plants: Wheat, corn, and rice
• Primary animals:
fish, beef, pork, and chicken
• 14 plant and 8 animal species provide
90% of the global food calories
Page 3
Where does our food come
from?
• Croplands (mostly grain) – provide 77%
of the world’s food
• Rangelands (meat) supply 16%
• Oceanic fisheries (fish and shellfish) –
7%
How Is Food Produced?
• Sources of food
• Primary plants: Wheat, corn, and rice
• Primary animals:
fish, beef, pork, and chicken
• 14 plant and 8 animal species provide
90% of the global food calories
Major Types of Agriculture
• Industrialized agriculture
• Large amounts of fossil fuel, water, fertilizer, and
pesticides to produce monoculture crops or livestock
animals
• Plantation
• Form of industrialized agriculture – single ownership
• Traditional subsistence agriculture
– Produce only enough for the family
• Traditional intensive agriculture
– Increase outputs for profit
Page 4
Where does our food come
from?
• Croplands (mostly grain) – provide 77%
of the world’s food
• Rangelands (meat) supply 16%
• Oceanic fisheries (fish and shellfish) –
7%
How Is Food Produced?
• Sources of food
• Primary plants: Wheat, corn, and rice
• Primary animals:
fish, beef, pork, and chicken
• 14 plant and 8 animal species provide
90% of the global food calories
Major Types of Agriculture
• Industrialized agriculture
• Large amounts of fossil fuel, water, fertilizer, and
pesticides to produce monoculture crops or livestock
animals
• Plantation
• Form of industrialized agriculture – single ownership
• Traditional subsistence agriculture
– Produce only enough for the family
• Traditional intensive agriculture
– Increase outputs for profit
Industrialized Agricultural
Wastes and Land Pollution
• Animal Confinement
– Waste runoff
• Overgrazing
– Increases soil erosion
• Sedimentation
• Nutrient application
• Irrigation
• Pesticides
Page 5
Where does our food come
from?
• Croplands (mostly grain) – provide 77%
of the world’s food
• Rangelands (meat) supply 16%
• Oceanic fisheries (fish and shellfish) –
7%
How Is Food Produced?
• Sources of food
• Primary plants: Wheat, corn, and rice
• Primary animals:
fish, beef, pork, and chicken
• 14 plant and 8 animal species provide
90% of the global food calories
Major Types of Agriculture
• Industrialized agriculture
• Large amounts of fossil fuel, water, fertilizer, and
pesticides to produce monoculture crops or livestock
animals
• Plantation
• Form of industrialized agriculture – single ownership
• Traditional subsistence agriculture
– Produce only enough for the family
• Traditional intensive agriculture
– Increase outputs for profit
Industrialized Agricultural
Wastes and Land Pollution
• Animal Confinement
– Waste runoff
• Overgrazing
– Increases soil erosion
• Sedimentation
• Nutrient application
• Irrigation
• Pesticides
Waste runoff increases nutrients
and pathogens in streams
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