Chapter 10 Flashcards
(27 cards)
What is Sustainable Agriculture?
farming and grazing that maintains healthy soil, clean water, pollinators, genetic diversity, and other resources needed long term
Possible solutions to reduce fossil fuels include.
Increase in organic farming
Improved technologies
Greater use of genetically-modified crops
How much energy moves to the next trophic level every time one organism consumes another?
10% of the energy
Eating a lower on the food chain/more vegetarian diet is…
more energy-efficient and reduces our ecological footprint
Animal agriculture accounts for how much or our green house gas emissions?
14.5%
The industrialization of agriculture has
boosted worldwide production of food and fiber immensely, but has also brought increased pollution and resource depletion.
Organic farming decreases efficiency
but also has far fewer environmental impacts.
Food security
guarantee of an adequate, safe, nutritious, and reliable food supply.
Green Revolution
Norman Borlaug introduced farmers to a disease-resistant, high-yield strain of wheat
Sustainable agriculture
- Increase in organic farming
- Improved technologies
- Greater use of genetically-modified crops
Norman Borlaug
Green Revolution
- disease resistant, high-yield strain of wheat
- pioneered organic agriculture
We lose 5 to 7 million hectares of productive cropland per year to
soil degradation
Until about 10,000 years ago out species depended on
hunting and gathering
Factors involved in soil formation included
weather of parent material and the addition of organic material
The o horizon is
primarily composed of organic matter
WHAT is the loss of more than 10? of soil productivity in arid areas due to such factors as erosin, soil compactiction, overgrazing, and forest removal
Desertification
WHAT is the buildup of salts in soils, often as a result of overittigation
Salinization
the results of the overapplication of fertization can include
eutrophication in nearby waves
Irrigation can result in the salinzation of soils because
Salts in the water are deposited on the soil surface as water evaporates
Kwashiorkor
impoverished area
large abdomen
red hair
Managing crop competitors and pests has been challenging to agronomists for centuries. One approach, integrated pest management,
combines a variety of pesticides to combat the pest
The average consumer can reduce their ecological footprint by
eating less meat and dairy
More than 1 in three adults are obese
in US
over half of the GM crops are
soybeans
