Food

Question 1

What is a famine?

Answer 1

A widespread shortage of food.

Question 2

What is food insecurity?

Answer 2

Being without reliable access to sufficient quantity of affordable, nutritious food.

Question 3

What is food security?

Answer 3

When people at all times have access to sufficient, safe, nutritious food.

Question 4

What are the causes of food insecurity?

Answer 4

1. Climate
2. Pests and diseases
3. Water supply
4. Technology
5. Conflict
6. Poverty
7. Climate change

Question 5

What are the impacts of food insecurity?

Answer 5

1. Famine
2. Undernourishment (the outcome of insufficient food intake)
3. Rising prices
4. Conflict
5. Soil erosion

Question 6

What is soil erosion and how does it occur?

Answer 6

The removal of the fertile top soil layers by wind and water.
- Overgrazing reduces vegetation and leaves soil exposed
- Cultivation if marginal land becomes infertile
- Deforestation removes protective covering
- Growing crops uses up valuable nutrients

Question 7

What is aeroponics and the + and -?

Answer 7

Growing plants in an air or a moist environment without the use of soil.
- Reduces and controls the amount of pests
- Very expensive
- Requires specialist knowledge and maintenance

Question 8

What is hydroponics?

Answer 8

A method hog growing plants using mineral nutrient solutions in water without soil.

Question 9

What is bio technology + and - ?

Answer 9

Improving production through genetic engineering.
- Improved nutrient value
- Improved shelf life
- Resistance to disease
- Reduced biodiversity and changed habitat