Sci chp 10
DDT is harmful to the environment because it
All of the above
Commercial inorganic fertilizers commonly contain all of the following except
Iodine
Which of the following is a micronutrient, which without sufficient quantities in a diet can result in goiter?
Iodine
Anemia can be the result of a deficiency in
Iron
Which of the following categories includes all of the others?
Pesticides
Which of the following statements is false?
The goal of integrated pest control is the complete eradication of the pest.
Which of the following would not be used to describe polyculture?
The plot of land is left unmanaged for long periods of time.
Which of the following types of agriculture is most characteristic of developing countries?
Traditional agriculture
Administration of ____ could prevent the majority of blindness in developing countries in the world.
Vitamin A capsules
Which of the following best describes how the process of irrigation can lead to salinization of soils?
Water associated with irrigation contains small amounts of dissolved salts. Evaporation leaves behind increasing concentrations of these salts.
Persistent pesticides are those that
become concentrated in organisms high on the food chain.
The term overnutrition refers to people who
eat more than the basic minimum number of daily calories
An integrated pest management program attempts to
greatly reduce pre-harvest pest-induced crop losses
The green revolution has relied upon each of the following except
increasing the diversity of crops grown simultaneously on a plot of land
Which of the following is central to most of the efforts to conserve topsoil?
keeping the soil covered by vegetation
The ideal pesticide would
kill only the target pest
Some beneficial changes in pesticides and their use include all of the following except
pesticides, which kill only the target pest and do no harm to any other species
Integrated pest management ____ than pesticides.
requires more expert knowledge about individual pest-crop situations
The term malnutrition refers to people who
suffer from lack of protein and other key nutrients
Cows require a high quantity of feed because they ________.
take time to grow and have a low energy conversion efficiency
Which of the following is a serious problem associated with the use of modern synthetic pesticides?
All of these
Agriculture as it is currently practiced can cause
All of these answers
Which of the following is a characteristic of feedlots or animal factories associated with livestock production?
All of these are characteristics of these types of livestock production.
One potential way to deal with the problem of seafood overharvesting is by intensifying _____ efforts.
Aquaculture
Integrated pest management can include chemical pest control, _____, and a mix of farming methods.
Biological pest control
Through the use of genetic engineering, agricultural experts hope to increase food production with plants that do all of the following except
Do not require
Which of the following types of agriculture is most characteristic of developed countries?
Industrialized agriculture
Which of the following approaches would be the least beneficial in trying to reduce insect damage?
Planting monocultures
Which of the following is the root cause of food insecurity?
Poverty
Sustainable agriculture is characterized by all of the following except
Promoting monoculture
Compared to conventional tillage, conservation tillage
Reduces fuel and tillage costs
Biological control
is often self-perpetuating once established