Sci chp 10

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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


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