Exam 10: Food - Soil - and Pest Management

Under the 1985 Food Security Act (Farm Act),farmers participating in the Conservation Reserve Program received ____________________ to stop planting crops on highly erodible land and replant with grass or trees for 10-15 years.​

Some nations have experienced an increase in certain crop yields after greatly cutting pesticide use.​

A chemical produced by animals to control their developmental processes at different stages of life is known as a ____.​

Discuss the relative costs of organically grown food and conventionally produced food.In your answer,explain the reason for these costs.Also give a possible example.​

A disadvantage to the green revolution is the intensive use of commercial inorganic fertilizers.​

What is a disadvantage of using pheromones to control pests?​

Most soil erosion is caused by ____.​

Some ____________________ have led to herbicide-resistant superweeds,some of which can rapidly grow more than 2 meters (7 feet)tall.​

Modern industrialized food production violates the three scientific principles of sustainability related to energy,greenhouse gases,and biodiversity.​

Aquaculture might be made more sustainable if ____.​

Government subsidies to fishing fleets ____ overfishing and reduction of aquatic biodiversity.​

​Scientists estimate that since 1900,we have lost 75% of the ____________________ of agricultural crops as genetic variety has declined.

What proportion of food products sold on U.S.supermarket shelves contains some form of genetically engineered crop?​

​What is the root cause of food insecurity?

Since 1945,approximately 1,000 species of insects and rodents have ____ insecticides.​

It takes about seven kilograms of grain to raise every one kilogram of beef.​

What is the type of agriculture most likely to be found in developed countries?​

Michael Pollan,in his landmark book The Omnivore's Dilemma,investigates and discusses the practices of meat production in modern,industrialized agriculture in the United States.After his extensive study,he writes that he believes hunting for meat may be the more humane and wise choice.He cites the fact that game animals at least live their lives in a free,uncaged environment,compared with beef cattle that spend much of their lives confined in feedlots,standing in manure and eating grain they are not designed to digest.Additionally,the game animal typically has a relatively quick and painless death. ​ Discuss this issue.Include in your discussion aspects of feedlots,energy consumed in meat production,and the relative impacts of farming versus hunting on biodiversity.

Without sufficient quantities of the micronutrient _____,goiters may develop.​

Since 1942,the use of synthetic pesticides has increased 10-fold,yet food supply damage due to pests has increased during that time.​