B6.2.1 Flashcards

1
Q

What is food security

A

Ability of human population to access affordable food of sufficient quality or quantity.

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2
Q

What are the factors affecting food security 1

A

Increasing human population

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3
Q

What are the factors affecting food security 2

A

Changing diets - as people become more wealthy. They eat a more varied diet. Includes meat, which is more energy intensive than plants.

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4
Q

What are the factors affecting food security 3

A

New pests and pathogens may evolve

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5
Q

What are the factors affecting food security 4

A

Climate change - predict that global warming will cause more droughts, and deserts will expand. Increases in atmosphere Co2 will lead to increasing yields of some crops.

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6
Q

What are the factors affecting food security 5

A

Agricultural costs are also increasing, recent high oil prices -> increased costs of storing and distributing food. These increases are passed on to the consumer, making some foods unaffordable for some people.

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7
Q

How can we increase food production 1

A

Maximising photosynthesis. Light levels, temperature and water supply in industrial glasshouses.

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8
Q

How can we increase food production 2

A

Using fertilisers. As a plant grows it removes minerals from soil. Fertilisers help soil to remain fertile.

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9
Q

How can we increase food production 3

A

Removing competition and pests. This includes herbicides to kill weeds, insecticides and fungicides to destroy disease causing fungi.

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10
Q

What are intensive farming techniques

A

They aim to produce the maximum food product yield from the minimum area of land.

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11
Q

What are intensive farming technique examples

A

.Using fertilisers and pesticides to aid plant growth
.Maximising animal growth rates
.Minimising labour inputs by using machinery

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12
Q

What is organic farming

A

Organic farming - use of natural methods of producing crops and rearing animals, avoids artificial chemical use. Yields are smaller so it’s more expensive.

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