Shared Flashcard Set

Details

Chapter seven
SC225: Environmental Science
13
Environmental Studies
Undergraduate 1
09/12/2009

Additional Environmental Studies Flashcards

 


 

Cards

Term
Why are undernourished children from undernourished parents common?
Definition

Because undernourished parents cannot afford to feed their children properly.      

[image]

CHAPTER 7, p. 153

Term
What two eye conditions are vitamin A deficiency linked to?
Definition

Dry eyes and retinal degeneration.

 

CHAPTER 7, p. 154

Term
What two diseases are linked to protein deficiencies?
Definition

Marasmus and kwashiorkor.

 

CHAPTER 7, p. 154

Term
In what regions does wind erosion primarily cause problems?
Definition

In open, arid regions.

 

CHAPTER 7, p. 162

                

Term
Soil salinization and acidification are examples of…
Definition

chemical deterioration of soil.

 

CHAPTER 7, p. 163

Term
What causes waterlogging?
Definition

Excessive irrigation.

 

[image]

 

CHAPTER 7, p. 163; Glossary, p. 388

Term
How much LESS energy is needed to directly farm crops in the United States, versus the amount used to actually process and distribute it?
Definition

1/5

 

(In other words, it takes five times as much energy to process and distribute food as the amount used to directly in farming.)

 

CHAPTER 7, p. 164   

 

Term
What has caused recent increases in agricultural productivity in developing nations?
Definition

New crop varieties and intensified farming.

 

CHAPTER 7, p. 165

Term
What causes the high yields in high responder green revolution miracle crops?
Definition

Fertilizers, pesticides, and irrigation.

 

[image]

 

CHAPTER 7, p. 166

Term
What is likely to happen as wheat farmers rely on fewer new species?
Definition

1. An epidemic of wheat disease

2. Old wheat varieties are lost

3. Genetic resources are diminished

 

CHAPTER 7, pp. 166-167

Term
What farming techniques prevent water and soil loss?
Definition

Contour plowing and strip farming.

 

[image]

 

CHAPTER 7, p. 169; Glossary p. 380

Term
What is the most sustainable land use in tropical forests?
Definition

Periodic mixed (swidden or slash-and-burn) agriculture.

 

CHAPTER 7, p. 170

Term
What type of farming is cheaper and safer than conventional farming?
Definition

Sustainable farming.

 

CHAPTER 7, pp. 168 & 171-172

Supporting users have an ad free experience!