Week 2

Question 1

Main pollutants from agriculture are ___ and sedimentation

Answer 1

nutrients

Question 2

Main pollutants from agriculture are nutrients and ___

Answer 2

sedimentation

Question 3

Water pollution is an example of ___ - an additional cost to the community, on top of the farmer’s cost of production

Answer 3

an external cost

Question 4

Some pesticides cause negative impacts on ___

Answer 4

human health or the environment

Question 5

Some pesticides cause negative impacts on human health or the environment.

Economist would refer to these as ____

Answer 5

external costs

Question 6

Pesticide bans aim to reduce the external costs of pesticides, but at a ___ to agriculture

Answer 6

cost

Question 7

Dryland salinity in Australia has resulted from ___ and replacing it with shallow rooted annual crops and pastures

Answer 7

clearing deep rooted perennial vegetation

Question 8

Dryland salinity in Australia has resulted from clearing deep rooted perennial vegetation and ___

Answer 8

replacing it with shallow rooted annual crops and pastures

Question 9

___ in Australia has resulted from clearing deep rooted perennial vegetation and replacing it with shallow rooted annual crops and pastures

Answer 9

Dryland salinity

Question 10

Dryland salinity: Rising water table mobilises ___

Answer 10

salts

Question 11

Dryland salinity: The economics of some key salinity prevention methods are ___ to farmers

Answer 11

not attractive

Question 12

Phosphorus has ___ substitute

Answer 12

no

Question 13

___ phosphorus widely discussed

Answer 13

Peak

Question 14

Peak phosphorus probably ___ soon

Answer 14

not

Question 15

Higher phosphorus prices
___
Higher cost to consumers

Answer 15

Higher cost to farmers but also higher revenues

Question 16

Higher phosphorus prices
Higher cost to farmers but also higher revenues
___

Answer 16

Higher cost to consumers

Question 17

Increasing competition for water between irrigated agriculture and other uses
___
environment
industry

Answer 17

towns

Question 18

Increasing competition for water between irrigated agriculture and other uses
towns
___
industry

Answer 18

environment

Question 19

Increasing competition for water between irrigated agriculture and other uses
towns
environment
___

Answer 19

industry

Question 20

Water shortages: water being ___ in some cases

Answer 20

re-allocated

Question 21

Water shortages: water being re-allocated in some cases
___
Has been controversial in Australia

Answer 21

Reduced agricultural production

Question 22

Water shortages: water being re-allocated in some cases
Reduced agricultural production
___

Answer 22

Has been controversial in Australia

Question 23

___ by effective herbicides, leads to evolution of resistance

Answer 23

High selection pressure

Question 24

High selection pressure by effective herbicides, leads to ___

Answer 24

evolution of resistance

Question 25

Herbicide resistance: can reduce farmer’s profits ___

Answer 25

substantially

Question 26

In many cases, managing herbicide resistance is like mining an ___ resource

Answer 26

exhaustible

Question 27

Herbicide resistance can cause ___ costs

Answer 27

external

Question 28

Climate change likely to have ___ effects on agriculture in different places

Answer 28

different

Question 29

Climate change: changes in ___, rainfall and CO² will occur

Answer 29

temperature

Question 30

Climate change: changes in temperature, ___ and CO² will occur

Answer 30

rainfall

Question 31

Climate change: changes in temperature, rainfall and ___ will occur

Answer 31

CO²

Question 32

Climate change: changes in temperature, rainfall and CO² will occur.

___ are sensitive to each of these

Answer 32

Yields

Question 33

Climate change: much ___ about changes, especially for rainfall and extreme events

Answer 33

uncertainty