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In 1960, 60% & today 14% of the population of developing countries is considered _________ __________.
In 1960, 60% & today 14% of the population of developing countries are considered chronically undernourished.
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Famines are:
Famines are characterized by large-scale food shortages, massive starvation, social disruption, and economic chaos.
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__% of Americans are overweight, __% are obese.
64% of Americans are overweight. 33% of are obese.
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Malnourishment is:
a nutritional imbalance caused by a lack of specific dietary components or an inability to absorb or utilize essential nutrients.
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What are the 3 crops that deliver the majority of the needed nutrients to humanity?
Wheat, Rice, and Corn.
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It takes more than _ kg of grain to produce 1 kg of beef.
It takes more than 8 kg of grain to produce 1 kg of beef.
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One danger of Confined Animal Feeding Operations is:
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Farm subsidies benefit because they:
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Genetic engineering:
removes DNA from one organism and splices it into the chromosomes of another. Produces genetically modified organisms (GMOs) with new traits.
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Soil is:
a renewable resource that develops gradually through the weathering of rocks and the accumulation of organic material.
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List the 6 components of soil:
- Sand and gravel
- Silt and clay
- Dead organic material
- Soil fauna and flora
- Water
- Air
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One danger of Confined Animal Feeding Operations is:
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O Horizon is:
Organic Layer
Leaf litter, most soil organisms and partially decomposed organisms
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A Horizon is:
Surface Soil
Mineral particles mixed with organic material
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E Horizon is:
Washed Out
Depleted of soluble nutrients
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B Horizon is:
Subsoil
Often dense texture from accumulating nutrients
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C Horizon is:
Regolith - Parent Material
Weathered rock fragments with little organic material
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How much soil can a farm lose to erosion per year?
Every year, about 3 million hectares of cropland worldwide are made unusable by erosion and another 4 million hectares are converted to non-agricultural uses.
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What are the four types of pesticides?
- Biocides - kills variety of living organisms
- Herbicides - kills plants
- Insecticides - kills insects
- Fungicides - kills fungi
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