Food Production

Question 1

When will food security be achieved

Answer 1

When the whole global human population has access ro enough safe and nutritious food to stay healthy

Question 2

Obsticals to food security

Answer 2

Increasing birth rates

New pests and pathogens reducing farming yield

Extreme events associated with climate change

Conflicts ( war) = reduced accessibility to resources

Cost of agricultural inputs like fertilisers means that farmers can afford less so yield suffers

Diet shifts - means food is transported across the world to meet commands

Question 3

What is biotechnology

Answer 3

Use of biological processes to develop or make products. Modern techniques include:

Growing microorganisms for food

Genetically modified plants

Question 4

What does a declining fishing stock mean

Answer 4

Fishermen struggle to make enough money

Food security threatened

Food chains effected

Populations of fish at risk of becoming extinct

Question 5

What is sustainable fishing

Answer 5

Fish are not caught at a faster rate than they reproduce

Net size - controlling net hole sizes allows young smaller fish to slip through so they can survive to maturity

Fishing quotas - restricting number and size of fish that can legally be caught

Question 6

Farming techniques to improve food production

Answer 6

Shortening food chains as only 10 percent of energy from each trophic layer passes to the next, so a shorter chain will allow more energy at the end

Energy will always be transfered from livestock to the environment due to essential processes like moving and maintaining body temp so by limiting the space they can move about and controlling the temperature of the area you can stop that

Feeding animals high protein foods helps boost there growth rates

Question 7

BM1 =

Answer 7

Mass ÷ height²