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1
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2
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- Humans survive because of agriculture!
- Where does milk come from?
- How do we get energy?
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3
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- Food
- Fiber (Clothing)
- Shelter (Forestry and Wood Products)
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4
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- FoodàSolid and liquid
living things eat
- Nutrientsàsubstances
necessary for living things to live and grow
- WHY DO WE NEED FOOD?
- Energy
- Growth and repair
- Good health
- Body processes
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5
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- Sources of food
- Plant sourcesàEarth has
250,000 species of plants. We
use only around 600 for human consumption!
- Animal sourcesàover 2
million species of animals are found on Earth. We eat only about 50 species, and
only 4 are raised in large numbers.
What are these 4?
- Cattle, hogs, chickens, and sheep
- What about fish?
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6
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- Fiberàmaterial used to make
clothing and shelter
- Animalàwool, mohair, fur,
and silk
- Plantàcotton, flax, hemp,
jute, and sisal
- We all know what cotton is, right?
- Flaxàcomes from the stems
of flax plants. It is used to
make linen
- Hemp, jute, and sisal are all coarse fibers.
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7
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- Fiberàmaterial used to make
clothing and shelter
- Manufactured and MineralàSynthetic
materials. Polyester and Nylon
are great examples. Asbestos is
made from minerals.
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8
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- What do we need shelter for?
- Protect us from the elements and from wild animals and insects (like
spiders…)!
- ForestryàScience of
producing trees.
- ProductsàLumber, Plywood,
Veneer, Composition board, and Paper
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9
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- Began with DOMESTICATIONàtaming
of wild plant and animals to produce them for a specific purpose.
- Read, as a class, pages 11-13.
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10
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- AGRICULTUREàscience of
growing crops and raising livestock.
- Charles Townshendàcrop
rotation system
- Jethro Tullàplanter
- Eli Whitneyàcotton gin
- Cyrus McCormickàreaper
(harvesting machine)
- John Deereàsteel moldboard
plow
- Gregor Mendelàbasic
principles of heredity
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11
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- Agriscienceàthe application
of scientific principles and new technologies to agriculture.
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