Q6: Productivity on a farm

Question 1

Ways to increase the energy available for human consumption through farming
2

Answer 1

1. Reduce the energy lost to other organisms

2. Reduce the energy lost through respiration

Question 2

How is energy lost to other organisms

Answer 2

pests

Question 3

Insecticides

Answer 3

kill insect pests that eat and damage crops

Question 4

Herbicides

Answer 4

kill weeds

Question 5

Weeds

Answer 5

unwanted plant species

Question 6

Killing weeds can…

2

Answer 6

remove direct competition with the crop for energy from the sun
remove habitat or food source of pests

Question 7

Biological agents to reduce pests

2

Answer 7

parasites

pathogenic bacteria and viruses

Question 8

Chemical pesticides to reduce pests

2

Answer 8

insecticides

herbicides

Question 9

Farmers may use integrated systems…

Answer 9

combine both chemical and biological methods of pest removal.

Question 10

Ways respiratory losses are reduced of animals

2

Answer 10

restriction of movement

pens kept warm, indoors

Question 11

Benefits of reducing respiratory losses of livestock

Answer 11

more food produced, shorter space of time, lower cost

Question 12

Problem with reducing respiratory losses of livestock

Answer 12

ethical issues