4.5 + 4.6

Question 1

What is mitigation

Answer 1

deal with the cause of problem

Question 2

adaptation

Answer 2

respond to problem

Question 3

Describe process of carbon capture and storage

Answer 3

It captures carbon dioxide from emissions sourcces and storing it in an impermeable ‘cap rock’ to prevent it escaping

An advantage is that it could also be a source of electricity in the future. It could also mitigate for 10-50% of the world’s carbon emissions up until 2100

A disadvantage is that it is unclear if it could escape from storage in the long term and if it will pollute groundwater supplies

Question 4

Explain the use of alternative energy production

Answer 4

2013 - 14.9% UK electricity by renewable sources mostly used by NEE’s

Disadvantages: Expensive, solar can’t be relied on at night

Question 5

Explain the use of international agreements

Answer 5

2015 - Paris Climate Conference
Agreed to reduce levels of CO2 by 60% by 2050.

Disadvantages: Some countries can afford to mitigate more than others

Question 6

Explain what the UK is doing to help planting trees

Answer 6

£24.9 million project to reduce deforestation
reduce 10.71 million tonnes of CO2 emissions over 20 years be recovering 41,560 hectares of degraded forests

Question 7

Explain how change in agricultural systems globally will help climate change

Answer 7

Increasing irrigation for dry areas
Changing crops to drought-resistant varieties
Potato Park in Peru experiment with over 1000 different varities to produce more resistant stock of potatoes to withstand changes in climate

Question 8

Explain how change in managing water supply in UK will help climate change

Answer 8

• Reducing demand, 2030 all London homes to have retrofit package of water-efficient devices
• Increasing supply, desalination of salt water in Thames to provide more drinking water for 400,000 homes

Question 9

Explain how change in reducing risk from sea levels rising will help climate change

Answer 9

• 1982 Thames Barrier to stop tidal surges
• A 50cm rise in sea level could compromise the ability to protect less people

Question 10

Describe how greenhouse gas emissions from energy production could be reduced

Answer 10

• using renewable energy sources such as solar power to prevent the amount of carbon released
• Carbon capture - capturing CO2 from emission sources store them away in impermeable rock as well as removing it from the atmosphere