how can human activity manage water and food resources?

Question 1

Green revolution advantages

Answer 1

yeilds increased dramatically in 1970’s=more food

Question 2

green revolution disadvantages

Answer 2

expensive chemical fertilisers and don’t know long term effects. farm unemployment risen

Question 3

genetic modification advantages

Answer 3

plants are more resistant to pests/drought/disease

Question 4

genetic modification disadvantages

Answer 4

don’t know long term effects on human health

Question 5

increasing land under production (land reform policies) advantages (bringing in more land for food production)

Answer 5

jatropha in Mali grown lets roots bind soil together preventing desertification

Question 6

increasing land under production (land reform policies) disadvantages

Answer 6

jatropha plantations don’t provide fuel wood or fodder so may be opposed by poor-requires fencing and guarding which increases cost.

Question 7

EU policies advanatges

Answer 7

increased production, new farmers received support for environmental management

Question 8

EU policies disadvantages

Answer 8

led to surpluses and environmental concerns