Unit 3 - Key Area 1&2 (Sustainability and Food) Flashcards Preview

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Flashcards in Unit 3 - Key Area 1&2 (Sustainability and Food) Deck (27)
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1

Use of chemicals by farmers including pesticides and fertilisers.

Agrochemicals

2

Occurs when too many nutrients (nitrates and phosphates) enter the water allowing more algae to grow

Algal bloom

3

The farming of aquatic animals and plants in fresh, brackish or marine water environments under controlled environments

Aquaculture

4

When a pollutant is stored in an organisms tissues at a faster rate than it can be metabolised

Bioaccumulation

5

This increases when the number of bacteria in water increases as a result of organic waste

Biological oxygen demand (BOD)

6

When the level of a pollutant builds up at each trophic level

Biomagnification

7

A method used in intensive agriculture to increase crop yields involving changing the crop grown in an area regularly

Crop rotation

8

The process of nutrient enrichment of water caused by increased levels of nitrates and phosphates (from fertilisers)

Eutrophication

9

Change in technology to increase global food production involving the production of new species by altering genes

Genetic modification (GM)

10

When all people have an uninterrupted energy sources at an affordable price

Energy security

11

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

Food security

12

When all people have access to a sufficient supply of clean fresh water

Water security

13

Used to increase global food production involving growing crops that produce more product

High yield varieties

14

Growing plants in mineral nutrient solutions rather than soil.

Hydroponics

15

Land around the edges of cultivated land which may be less suitable for farming. (often used for sheep grazing)

Marginal land

16

Compound that is resistant to environmental degradation. E.g. pesticides

Persistent organic pollutants (POPs)

17

deliberately selecting livestock which have desirable characteristics. E.g. Breeding cows for increased milk production.

Selective breeding

18

Improving standards of living and quality of life without wasting resources or harming the environment.

Sustainable development

19

An energy level or stage in a food chain/web

Trophic level

20

The use of increased machinery in agriculture

Mechanisation

21

Land used for growing crops

Arable land

22

A method of controlled irrigation in which water is slowly delivered to the root system of plants, either dripped onto the soil surface above the roots or directly to the root zone.

Drip irrigation

23

Foods can be eaten up until the stated date but not after, providing storage instructions stated on the packaging have been followed correctly

Use by date

24

The process by which the world is becoming increasingly interconnected as a result of massively increased trade and cultural exchange

Globalisation

25

Farming that uses a lot of machinery, labour, chemicals, etc in order to maximise crop yield or keep as many animals as possible on a set plot of land

Intensive agriculture (farming)

26

Excessive inputs of macro-nutrients (nitrate, ammonia and phosphate) into the aquatic environment

Nutrient enrichment

27

The relationship or balance between social, economic and environmental issues

Sustainability