ess

Question 1

soil structure and properties

Answer 1

anchor roots, supply water, protect against temp

Question 2

soil conditions physical that restrict plant growth

Answer 2

barriers- v compact soil
no cracks
low 02 levels
temp too extreme

Question 3

soil conditions chemical that restrict plant growth

Answer 3

low nutrient
high aluminum conc. and low pH
phytotocox chen in anaerobic soil ( meta; pr insects )

Question 4

spil types

Answer 4

agricultural potential depends on porosity and permeability of soil surface
- pore space controls water drainage

Question 5

small peds have mor or less surface area

Answer 5

more

Question 6

sandy soil

Answer 6

low primary pro. can’t hold water, few nutrients

Question 7

clay soil

Answer 7

very low primary prod., poor creation, low water inf.

Question 8

loam

Answer 8

high primary prod., med. infiltration, can hold water, nutrients good, aeration, easy to work w

Question 9

primary productivity of soil

Answer 9

mineral content, air pscaes, drainage, water holding ability, living things, potential to hold organic matter

Question 10

pH lab instruments

Answer 10

feral type pipett
soil core tube
universa; indicator solution
soil typ schart

Question 11

sustain. of terrestrial food pro. sys. is influenced by :

Answer 11

socio-political, eco$, and eco factor

• consumers
• food is inequitably available =/ land suited for p.p= unevenly distributed= conflict and conersns

Question 12

what % of food pro. doesn’t make it to the plate ?

Answer 12

30-50
- 1.2-2 billion tons of waste
LEDC- farmer end
MEDC- post consumer waste end

Question 13

how many b. of h20 is wasted?

Answer 13

550 billion

Question 14

LEDC is less likely to be ? when relations to food loss

Answer 14

mechanized, les info structure, may not have the right place to store the food

Question 15

MEDC looses food how?

Answer 15

pos consuming bc of aesthetic, best buy dates, buy in bulk

Question 16

what are some links and influencing factors between social sys. and food pro sys ?

Answer 16

EVS infuclences f.p.s for a society

• socio economic
• cultural
• eco, eco $
• political

Question 17

socio-economic ex:

Answer 17

farming ofr porfit, substinance, local consumption, export quantity, commercial

Question 18

shifting cultivation aka slash and burn

Answer 18

• 50 years before go back to the same plot
• ex: amazon rainforest
• small pop., small areas cleared by far of small community
• traditions/ rituals
• remembering hist
• animist- everything has soul
• ecocentric approach

Question 19

wet rice eco

Answer 19

• SE asia
• terracing
• intensive labour
• high labour, low tech, high pop dens.
• high in clay

Question 20

terracing

Answer 20

slope is divided into flat terraces or steps w/ bunds ( wall or raised evens) at edges fadeout of stones t or trap water

Question 21

socio- cultural factors & food pro

Answer 21

• what people want and believe
• most europ e wants organic
• concern for animal welfare
• edu levels - faming tech
• land ownership/ immigration

Question 22

agribusiness

Answer 22

shift from production of food for people needs tor production for commercial profit and profitable return
- maximize prod. and $ t complete in the global market

Question 23

main characteristics of agribusiness

Answer 23

• large scale monoculture
• use of fertilizers and pesticides
• mechanized ploughing and harvesting
• sports of food production for mass markets
• gmo
• loss of bio d = native habitats been cleared

Question 24

agriculture in ledc suffer from low levels of

Answer 24

tech
lack of capital
uses high level of labor

Question 25

farming is a - system

Answer 25

open

Question 26

Which one of the following terrestrial food production systems uses the highest amounts of fertilizers?

Answer 26

north american cereal farming

Question 27

Which one of the following responses indicates which agricultural system(s) produce significant levels of atmospheric pollutants?

Answer 27

Both intensive beef production and slash and burn agriculture

Question 28

Which one of the following is an input that plays the most crucial role in subsistence rice farming in South East Asia?

Answer 28

Water for irrigation

Question 29

Which of the following terrestrial food production systems may be regarded as the most sustainable??

Answer 29

Maasai tribal livestock cultivation.

Question 30

Which of the following practises in industrialised terrestrial food production systems contributes the most to global climate change?

Answer 30

Mechanisation increases fossil fuel use and emits gases such as carbon dioxide or methane.

Question 31

A ______________ farm will produce only that amount of yield that is sufficient to feed a family.

Answer 31

subsistence

Question 32

A _______________ farm will cultivate a single crop for monetary profit.

Answer 32

commercial

Question 33

What is the term used to describe the successive planting of different crops on the same land to maintain soil productivity?

Answer 33

Crop rotation

Question 34

Salinization is caused by the movement of water in soil.

Answer 34

upwards

Question 35

Soil may be compared to an open system as it exchanges both matter and energy with the surroundings. Choose the sequence which lists soil storages.

Answer 35

Water, air, organic matter, organisms, nutrients and minerals

Question 36

Which soil type has got the best water holding capacity?

Answer 36

clay

Question 37

Which of the soil types below has the highest levels of primary productivity?

Answer 37

loam

Question 38

Among the soil types below, which one can retain the smallest amounts of nutrients and minerals?

Answer 38

sand

Question 39

more draingae=

Answer 39

bigger particles, more permeability

Question 40

Which of the following soil types is very hard to work in hot and dry conditions?

Answer 40

clay