Food and AgricultureSection 3 Section 3: Animals and Agriculture Preview Classroom Catalyst...
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Transcript of Food and AgricultureSection 3 Section 3: Animals and Agriculture Preview Classroom Catalyst...
![Page 1: Food and AgricultureSection 3 Section 3: Animals and Agriculture Preview Classroom Catalyst Objectives Animals and Agriculture Food from Water Overharvesting.](https://reader036.fdocuments.in/reader036/viewer/2022062321/56649e625503460f94b5d9d9/html5/thumbnails/1.jpg)
Food and Agriculture Section 3
Section 3: Animals and Agriculture
Preview
• Classroom Catalyst
• Objectives
• Animals and Agriculture
• Food from Water
• Overharvesting
• Aquaculture
• Livestock
![Page 2: Food and AgricultureSection 3 Section 3: Animals and Agriculture Preview Classroom Catalyst Objectives Animals and Agriculture Food from Water Overharvesting.](https://reader036.fdocuments.in/reader036/viewer/2022062321/56649e625503460f94b5d9d9/html5/thumbnails/2.jpg)
Food and Agriculture Section 3
Section 3: Animals and Agriculture
Preview
• Ruminants
• Poultry
![Page 3: Food and AgricultureSection 3 Section 3: Animals and Agriculture Preview Classroom Catalyst Objectives Animals and Agriculture Food from Water Overharvesting.](https://reader036.fdocuments.in/reader036/viewer/2022062321/56649e625503460f94b5d9d9/html5/thumbnails/3.jpg)
Food and Agriculture Section 3
Classroom Catalyst
![Page 4: Food and AgricultureSection 3 Section 3: Animals and Agriculture Preview Classroom Catalyst Objectives Animals and Agriculture Food from Water Overharvesting.](https://reader036.fdocuments.in/reader036/viewer/2022062321/56649e625503460f94b5d9d9/html5/thumbnails/4.jpg)
Food and Agriculture Section 3
Objectives
• Explain how overharvesting affects the supply of aquatic organisms used for food.
• Describe the current role of aquaculture in providing seafood.
• Describe the importance of livestock in providing food and other products.
![Page 5: Food and AgricultureSection 3 Section 3: Animals and Agriculture Preview Classroom Catalyst Objectives Animals and Agriculture Food from Water Overharvesting.](https://reader036.fdocuments.in/reader036/viewer/2022062321/56649e625503460f94b5d9d9/html5/thumbnails/5.jpg)
Food and Agriculture Section 3
Animals and Agriculture
• Food from animals has been the basis of life for some human populations for centuries.
• Our ancestors obtained animal protein by hunting and fishing. Today, most people get animal protein from domesticated species.
• Domesticated describes organisms that have been bred and managed for human use.
![Page 6: Food and AgricultureSection 3 Section 3: Animals and Agriculture Preview Classroom Catalyst Objectives Animals and Agriculture Food from Water Overharvesting.](https://reader036.fdocuments.in/reader036/viewer/2022062321/56649e625503460f94b5d9d9/html5/thumbnails/6.jpg)
Food and Agriculture Section 3
Food from Water
• Because fish are an important food source for humans, the harvesting of fish has become an important industry worldwide.
• However, when too many fish are harvested over a long period of time, ecological systems can be damaged.
![Page 7: Food and AgricultureSection 3 Section 3: Animals and Agriculture Preview Classroom Catalyst Objectives Animals and Agriculture Food from Water Overharvesting.](https://reader036.fdocuments.in/reader036/viewer/2022062321/56649e625503460f94b5d9d9/html5/thumbnails/7.jpg)
Food and Agriculture Section 3
Food from Water
The North Atlantic cod fishery has collapsed because too many fish were harvested over time.
![Page 8: Food and AgricultureSection 3 Section 3: Animals and Agriculture Preview Classroom Catalyst Objectives Animals and Agriculture Food from Water Overharvesting.](https://reader036.fdocuments.in/reader036/viewer/2022062321/56649e625503460f94b5d9d9/html5/thumbnails/8.jpg)
Food and Agriculture Section 3
Overharvesting
• Overharvesting is the catching or removing from a population more organisms than the population can replace.
• Many governments are now trying to stop overharvesting. They have created no-fishing zones, so that fish populations can recover.
![Page 9: Food and AgricultureSection 3 Section 3: Animals and Agriculture Preview Classroom Catalyst Objectives Animals and Agriculture Food from Water Overharvesting.](https://reader036.fdocuments.in/reader036/viewer/2022062321/56649e625503460f94b5d9d9/html5/thumbnails/9.jpg)
Food and Agriculture Section 3
Aquaculture
• Aquaculture is the raising of aquatic plants and animals for human use or consumption.
• Fish and other aquatic organisms provide up to 20 percent of the animal protein consumed worldwide.
• Aquaculture may be one solution to the overharvesting of fish and other organisms in the world’s oceans.
![Page 10: Food and AgricultureSection 3 Section 3: Animals and Agriculture Preview Classroom Catalyst Objectives Animals and Agriculture Food from Water Overharvesting.](https://reader036.fdocuments.in/reader036/viewer/2022062321/56649e625503460f94b5d9d9/html5/thumbnails/10.jpg)
Food and Agriculture Section 3
Aquaculture
• Aquaculture is not a new idea.
• This practice probably began in China about 4,000 years ago.
• Today, China leads the world in using aquaculture to produce freshwater fish.
![Page 11: Food and AgricultureSection 3 Section 3: Animals and Agriculture Preview Classroom Catalyst Objectives Animals and Agriculture Food from Water Overharvesting.](https://reader036.fdocuments.in/reader036/viewer/2022062321/56649e625503460f94b5d9d9/html5/thumbnails/11.jpg)
Food and Agriculture Section 3
Aquaculture
• There are a number of different methods of aquaculture. Among these are• Fish farming• Fish ranching
• Fish farms generally consist of many individual ponds that each contain fish at a specific stage of development. Fish grow to maturity in the ponds and are then harvested.
• Fish ranches raise fish to a certain age, release them to the ocean, and then harvest the adults when they return to their birthplace to breed.
![Page 12: Food and AgricultureSection 3 Section 3: Animals and Agriculture Preview Classroom Catalyst Objectives Animals and Agriculture Food from Water Overharvesting.](https://reader036.fdocuments.in/reader036/viewer/2022062321/56649e625503460f94b5d9d9/html5/thumbnails/12.jpg)
Food and Agriculture Section 3
Aquaculture
• As with other methods of food production, however, aquaculture can cause environmental damage if not managed properly.
• Aquatic organisms can produce a large amount of waste, which can be a source of pollution.
• Because aquaculture requires so much water, the process can deplete local water supplies.
• Despite these problems, aquaculture will continue to be an important source of protein for the human diet.
![Page 13: Food and AgricultureSection 3 Section 3: Animals and Agriculture Preview Classroom Catalyst Objectives Animals and Agriculture Food from Water Overharvesting.](https://reader036.fdocuments.in/reader036/viewer/2022062321/56649e625503460f94b5d9d9/html5/thumbnails/13.jpg)
Food and Agriculture Section 3
Livestock
• Livestock is the term given to domesticated animals that are raised to be used on a farm or ranch or to be sold for profit.
• Populations of livestock have changed dramatically in the last 50 years.
• Large livestock operations produce most of the meat that is consumed in developed countries.
![Page 14: Food and AgricultureSection 3 Section 3: Animals and Agriculture Preview Classroom Catalyst Objectives Animals and Agriculture Food from Water Overharvesting.](https://reader036.fdocuments.in/reader036/viewer/2022062321/56649e625503460f94b5d9d9/html5/thumbnails/14.jpg)
Food and Agriculture Section 3
Livestock
![Page 15: Food and AgricultureSection 3 Section 3: Animals and Agriculture Preview Classroom Catalyst Objectives Animals and Agriculture Food from Water Overharvesting.](https://reader036.fdocuments.in/reader036/viewer/2022062321/56649e625503460f94b5d9d9/html5/thumbnails/15.jpg)
Food and Agriculture Section 3
Livestock
• In developing countries, livestock not only provide leather, wool, eggs, and meat, but also serve other functions.
• Some livestock are used as draft animals to pull carts and plows.
• Other livestock provide manure as the main source of plant fertilizer or as a fuel for cooking.
![Page 16: Food and AgricultureSection 3 Section 3: Animals and Agriculture Preview Classroom Catalyst Objectives Animals and Agriculture Food from Water Overharvesting.](https://reader036.fdocuments.in/reader036/viewer/2022062321/56649e625503460f94b5d9d9/html5/thumbnails/16.jpg)
Food and Agriculture Section 3
Ruminants
• Ruminants are cud-chewing mammals that have a three- or four-chambered stomach.
• Cattle, sheep, and goats are examples of ruminants.
• Cud is the food that these animals regurgitate from the first chamber of their stomachs and chew again to aid digestion.
• When we eat the meat of ruminants, we are using them to convert plant material, such as grass stems and woody shrubs, into food that we can digest—such as beef.
![Page 17: Food and AgricultureSection 3 Section 3: Animals and Agriculture Preview Classroom Catalyst Objectives Animals and Agriculture Food from Water Overharvesting.](https://reader036.fdocuments.in/reader036/viewer/2022062321/56649e625503460f94b5d9d9/html5/thumbnails/17.jpg)
Food and Agriculture Section 3
Ruminants
• Humans have created hundreds of breeds of cattle that are suited to life in different climates.
• Worldwide meat production per person has increased significantly since 1950.
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Food and Agriculture Section 3
Poultry
• Since 1961, the population of chickens worldwide has increased to a greater percentage than the population of any other livestock.
• Chickens are a type of poultry, domesticated birds raised for meat and eggs.
• In more-developed countries, chickens and turkeys are usually raised in factory farms.