KA5- Food Production

Question 1

Consequences of human population growth

Answer 1

Intensive farming required

Question 2

Intensive farming leads to

Answer 2

Changes in ecosystem
Loss in biodiversity

Question 3

Nitrogen

Answer 3

Major nutrient for plants
In the air can’t be taken up by plants or animals

Question 4

Harvesting

Answer 4

Removes nutrients

Question 5

Nitrates

Answer 5

Produces proteins

Question 6

Fertilisers

Answer 6

Replace nutrients
Contain nitrates

Question 7

Plants

Answer 7

Absorb nitrogen as nitrates

Question 8

Animals

Answer 8

Absorb nitrogen through other animals

Question 9

Eutrophication/algal bloom

Answer 9

Overuse of fertilisers- leak intro nearby rivers- extra unwanted nutrients- increases algal population

Question 10

Increase in algal population

Answer 10

Reduces light levels which kills plant life as they can’t photosynthesise

Question 11

Dead plants and algae

Answer 11

Becone food for the bacteria which multiply rapidly using up large quantities of oxygen, other organisms can’t survive

Question 12

Bioaccumulation

Answer 12

Overusing pesticides results in accumulation of toxic levels in the food chain which kills the top predator

Question 13

Biological control

Answer 13

Using natural predator to remove pests

Question 14

GM crops

Answer 14

Reduce the use of fertilisers

Question 15

Pests

Answer 15

Reduce crop yield

Question 16

Pesticides

Answer 16

Increase crop yield