Chapter 15: Food & Agriculture Review

1. Identify the major causes of malnutrition.
not enough variety of food or not enough food
2. Compare the environmental costs of producing different types of food.
Plants require less land, energy and water to produce the same number of calories as meat
3. Explain how malnutrition today is linked to poverty.
There is a sufficient amount of food if you have the money to buy it
World’s hungry are subsistence farmers
4. Describe the importance & effects of the green revolution.
Caused worldwide crop yield increases
required the use of large amounts of fertilizers, pesticides, and irrigation causing soil degradation
+Section 2+
1. Explain the differences between traditional & modern farming methods.
Traditional farming involved a plow, livestock for a machine, and producing only enough for your local community……Modern farming involves artificial fertilization, genetic modification of food, and modern irrigation
2. Describe the structure & composition of fertile soil.
Composed of living organisms, rock particles, water, air, and organic matter. There are several layers of soil under the topsoil.
3. Explain why the presence of plants helps prevent soil erosion.
Because without top soil, crops cannot be grown
4. Explain why soil conversation is an important agricultural practice.
Because soil is helpful to healthy plant growth
5. Define the term pest.
Any organism that occurs where it is not wanted or that occurs in large enough numbers to cause economic damage
6. Compare the benefits & environmental impacts of pesticide use.
Pesticide is a poison used to destroy pests, they can always harm beneficial plants
7. Describe how biological pest control is part of the integrated pest management.
The use of certain organisms by humans to eliminate or control pests
8. Describe how genetic engineering is used in agriculture.
The genome of a living cell is modified for medical or industrial use
+Section 3+
1. Explain why the percentage of seafood produced by aquaculture is increasing so rapidly.
Because they provide of 20% of the animal protein consumed world wide
2. Explain how over harvesting affects the supply of fish such as salmon.
Over harvesting could cause a species, such as salmon, to become endangered in that area, and is very important problem for aquatic animals.
3. Describe the importance of livestock to cultures that consume no meat.
Because they are used as draft animals to pull carts and plows

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