AG-BAS-1 The student evaluates human needs and demonstrates the role of agriculture in meeting the needs of humans: historically, currently and in the.

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Presentation transcript:

AG-BAS-1 The student evaluates human needs and demonstrates the role of agriculture in meeting the needs of humans: historically, currently and in the future.

AG-BAS-1b Identifies major categories of food and fiber products.

Materials Developed from: AgriScience, 4th ed. 2006 J. Lee and D. Turner Pearson/Prentice Hall Chapter 1: Human Needs and AgriScience, pgs 4-10

Food Food provides nutrients that are necessary for organisms to live and grow

Food Humans use food for four purposes: 1. Energy for activity: carbohydrates and fats

Food Humans use food for four purposes: 2. Growth and repair : proteins

Food Humans use food for four purposes: 3. Good health: vitamins and minerals.

Food Humans use food for four purposes: 4. Body processes: nutrients and water

Food Sources Almost all foods come from either plants or animals.

Food from Plants There are 250,000 species of plants; only 600 species are eaten by humans.

Food from Plants Wheat, rice, corn (cereal grains) are the major food items around the world.

Food from Animals There are 2,000,000 species of animals, only 50 species are eaten much by humans.

Food from Animals Terrestrial animals live on the land. 4 types are raised in large numbers: cattle, hogs, chickens, sheep.

Food from Animals Aquatic animals live in water. Aquaculture is a new industry that is growing rapidly.

Fiber/Clothing Fiber is produced in 3 ways: animals, plants, and manufacturing.

Fiber/Clothing – Animal Fibers Examples: Wool: from sheep (variations include: cashmere, alpaca, mohair, angora)

Fiber/Clothing – Animal Fibers Examples: Furs: from rabbit, mink, etc.

Fiber/Clothing – Animal Fibers Examples: Leather: from cattle, dear, etc.

Fiber/Clothing – Animal Fibers Examples: Silk: from cocoons of silkworms.

Fiber/Clothing – Plant Fibers Examples: Cotton: most important fiber

Fiber/Clothing – Plant Fibers Examples: Flax: stems of plants used to produce linen.

Fiber/Clothing – Plant Fibers Examples: Hemp, jute, sisal: coarse fibers from plants – used for rope, twine, cords.

Fiber/Clothing - Manufactured Manufactured fabrics are also known as synthetic or man-made.

Fiber/Clothing - Manufactured Examples: Nylon, polyester, spandex, lycra, etc.: usually made with petroleum and other chemicals.

Shelter Buildings used by humans for housing.

Shelter Most products used for shelter are produced by forestry.

Shelter Forestry is sometimes considered a type of fiber production because wood is composed of fibers.

Shelter Examples of forest products: Lumber

Shelter Examples of forest products: Plywood

Shelter Examples of forest products: Veneer

Shelter Examples of forest products: Composition board

Shelter Examples of forest products: Paper

Powerpoint by: Libby Lintel Kennesaw Mountain High School Kennesaw, GA 2008