food production

Question 1

1. What does agricultural management allow us to do? Which came fist agriculture or population growth?

Answer 1

its debated but agricultural management allows us to chose food and increase pop

Question 2

2. Until the 1950s how did we keep pace with the food needs of a growing population? How have done the same since the 1950s?

Answer 2

expansion of cultivated areas before 1950 so more cropland

Question 3

3. What are the techniques of the “green revolution”?

Answer 3

more machinery and chemical pesticides “modern chemical farming”

Question 4

4. How does the use of energy and efficiency of an industrial farm compare with the more traditional
   type of farming practice?

Answer 4

modern practice use more energy but less efficient ( in terms of sustainability )

Question 5

5. Compare the source of calories between the developed and less developed regions of the world.

Answer 5

Industrialized: 30% and not industrialized: less than 10%

Question 6

6. What are some of the environmental issues raised by modern farming techniques?

Answer 6

water pollution, air pollution, farm waste

Question 7

7. What is one of the main ingredients that underpins modern farming techniques?

Answer 7

nitrogenous fertilizers

Question 8

8. What are the environmental problems associated with the use of nitrogen fertilizers?

Answer 8

effect of the nitrogen cycle: the nitrogen use is loss in the air or the ground

Question 9

9. Give an example of the importance of irrigation to farming. What are the environmental
   repercussions?

Answer 9

compensation for low precipitation, salinity problem if waters mixed

Question 10

10. explain how the use of pesticides has perhaps created a positive feed back loop.

Answer 10

monocultures are more prone to bacteria so more pesticide of less efficiency

Question 11

11. What are the negative repercussions of increased pesticide use?

Answer 11

the development of resistance to the chemicals

Question 12

Discuss the various alternatives to pesticides outlined here.

Answer 12

resistance breeding and environmental control

Question 13

13. What does the term“genetically modified”mean?

Answer 13

GMs food produced from plants or animals that have had their genes changed by scientists in the laboratory rather than farmers

Question 14

14. The most successful modifications to date have been to aid? Which modifications have proved
    much more difficult to develop?

Answer 14

amid at the farmers ( insect resistance example ), traits affecting nutritional values harder

Question 15

What are some of the potential impacts that have been raised with the use of these technologies? ( genetic modification )

Answer 15

no control over the expression of new gene

Question 16

16. 75% of our food comes from just_____crops.

Answer 16

12

Question 17

17. What is food insecurity?

Answer 17

having enough food: when access to nutritious safe food limited= food insecurity

Question 18

18. At the country level what 2 types of food insecurity have been identified?

Answer 18

chronic and transitory

Question 19

19. At the global level how many people suffer from food insecurity and malnutrition? Why is this
    ironic?

Answer 19

815 millions and ironic because we have enough food for them

Question 20

To meet future demands for food without significance increases in prices how much more food do
we need to produce?

Answer 20

70-100% more

Question 21

21. Currently how much of our food production is wasted?What are the reasons for this waste in the developing and developed parts of the world

Answer 21

30-50% waste and over-eating

Question 22

Where should we focus our efforts to achieve more sustainable forms of agriculture?

Answer 22

production of crops and livestock using sustainable methods

Question 23

23. What is the critique of organic farming?Has this proven to be true in all cases?

Answer 23

less efficient but some have good conditions to be as efficient

Question 24

24. What can we make of the“food miles”argument?

Answer 24

“food miles” is local= better because of transport pollution

Question 25

25. Is It always true that livestock production is bad because it takes food away from people?

Answer 25

no that is too simplistic

Question 26

26. Aquaculture is dominated by?Who accounts for 90% of world out-put?

Answer 26

fish farming and Asia

Question 27

27. What are the identified adverse impacts of aquaculture for the environment?

Answer 27

destructions of natural environment etc

Question 28

28. What are some of the positive impacts? ( fish farming )

Answer 28

fish eat waste, they eat more so bigger fish= more people fed