control of GCC

Question 1

how can levels of carbon dioxide be reduced

Answer 1

1) reduction in fossil fuel use
2) use of energy resources with low carbon emission
3) carbon sequestration by planting more trees

Question 2

how can levels of methane be reduced

Answer 2

1) reduction in land fill waste via increased recycling
2) reduced livestock production
3) improved recovery of gases from coal mines

Question 3

how can levels of oxides of nitrogen be reduced

Answer 3

1) use of public transport
2) catalytic converters
3) addition of urea to power station effluents to reduce concentrations

Question 4

outline carbon capture and storage

Answer 4

1) carbon sequestration = planting more trees would take in carbon in the wood where it would be stored
2) CCS= development of tech which removes CO2 produced from industrial processes where it is captured, transported by road tankers or ships, then stored in depleted oilfields, gas fields or used ins secondary oil recovery

Question 5

outline geoengineering

Answer 5

• the use of untried tech that might contr natural processes to reduce the human greenhouse effect such as

1) painting roofs white increasing albedo
2) adding nutrients to the sea to stimulate plankton growth therefore photosynthesis
3) putting solar shades in orbit to reduce sunlight reaching earth

Question 6

list the ways we can adapt to climate change

Answer 6

1) flood control - building higher river banks and coastal defenses
2) coastal erosion control - building sea walls and wave screens to protect coats as waves strike
3) managed to retreat- used when cost of flood defence is greater than needs of protection so areas may be abandoned as water rises and erodes
4) urban drainage control

Question 7

list some urban drainage control methods

Answer 7

1) permable urban surfaces
2) river flow management
3) raised buildings
4) floating houses