Ch. 10 Study Guide Flashcards
How many kilograms of feed does it take to produce:
1kg Cow
20.0
How many kilograms of feed does it take to produce:
1kg Pig
7.3
How many kilograms of feed does it take to produce:
1kg Eggs
4.5
How many kilograms of feed does it take to produce:
1kg Chicken
2.8
How many kilograms of feed does it take to produce:
1kg Milk
1.1
Why is there a difference in the kilograms of feed it takes to produce an animal? Why is it significant?
Different animals require different amounts of food, to result in 1 meat for human use; It chooses how we use our resources, which has lead to feedlots (factory farms)
What is Monoculture? Benefits of it?
Large expanses of a single crop.
- More efficient
- Increases output
What is Recombinant DNA?
DNA that has been patched together from the DNA of multiple organisms.
Which type of livestock requires the most land and water to produce?
Land & Water- Beef/Cattle
Order of LAND required to produce 1kg of protein (meat)?
*Greatest to least
Beef Pork Milk Eggs Chicken
Order of WATER required to produce 1kg of protein (meat)?
*Greatest to least
Beef Pork Milk Chicken Eggs
What country leads the world in land area dedicated to GM crops?
The United States
Benefits of organic farming?
- Lower input costs
- Enhanced income
- Reduced chemical pollution & soil degradation
Risks of organic farming?
- Increased pest attacks
- Lack of synthetic chemicals encourages pollinating insects
What are BT crops?
Bacillus Thuringiensis; Soil bacterium that produces a protein that kills many caterpillars and some fly and beetle larvae.
What is IPM?
Irrigated Pest Management; Numerous techniques used to rid pests.
How do farmers utilize IPM?
Biocontrol, use of chemicals when needed, close monitoring of populations, crop rotation, mechanical pest removal.
Why did the Indonesian government support IPM for agriculture?
They subsided pest iced use heavily for years, which caused a bigger problem.
What are insects role in agriculture?
To pollinate crops.
What is the Cartegena Protocol? Has the U.S. Signed it?
A treaty that lays our guidelines for open information about exported crops.
Human diet is narrowed: ____ of our food comes from ____crop and ____livestock species.
90%; 15; 8
Why are seed lots important?
They keep seed samples in cold, dry conditions, to encourage long-term violability; Planted periodically to renew stocks.
Why is Oaxaca, Mexico significant?
–
How can livestock receive the labeling of organic?
- Raised organically from the second day of life
- Must be feed 100% organic
- Must have access outdoors
Why do soybeans and corn dominate the GM market?
They are ingredients in processed foods, so they are more easily accepted.
How much energy is lost from one trophic level to the next?
90%
Eating ______ on the food chain feeds more people.
Lower
why are environmentalist concerned about GM Crops if they decrease pesticide use?
Inserted genes can spread to non target species.
