![]() Agriculture - farmers will have to adapt as some crops may not be able to grow in a warmer climate.Instead they aim to respond to climate change by limiting its negative effects. At the end of each COP, every country promises to take action to reduce carbon emissions.Īdaptation strategies do not aim to reduce or stop global warming. The UK hosted the 26th Conference of the Parties (COP26) in Glasgow between the 31st of October and the 12th November 2021. This meeting is called the Conference of the Parties, or COP. Each year the United Nations holds a meeting to discuss climate change. The agreement aims to limit global warming to well below 2☌, ideally no more than 1.5☌. In 2016, the Paris Agreement united all the world's nations in a single agreement on tackling climate change. The countries that signed up to the treaty pledged to reduce their greenhouse gas emissions. International agreements - in 2005 the Kyoto Protocol became international law.Planting trees - encouraging afforestation, means that there will be more trees to absorb the carbon dioxide in the atmosphere during the process of photosynthesis.This reduces the amount of emissions into the atmosphere. Carbon capture - this is the removal of carbon dioxide from waste gases from power stations and then storing it in old oil and gas fields or coal mines underground.This will reduce the amount of carbon dioxide released into the atmosphere. Alternative energy - using alternative energy such as solar, wind or tidal can reduce the use of fossil fuels.Mitigation means to reduce or prevent the effects of something from happening. Calculate its surface area to volume ratio.Managing the impacts of climate change Mitigation strategies Example QuestionĪ cube has a side length of 10 nm. When light hits these coatings, they break down dirt on the glass. Self-cleaning window panes have nanoparticulate coatings. Nanoparticles have a very high surface area to volume ratio and make excellent catalysts. The greater the surface area of the catalyst compared with the volume of the catalyst, the more effective the catalyst will be at speeding up the reaction. The reactions take place on the surface of the catalyst. High surface area to volume ratiosĬatalysts speed up reactions. These silver nanoparticles kill the bacteria that lead to smelly feet. Nanoparticles of silver are added to a special type of sock. Many people prefer nanoparticulate sunscreen because it is not obvious that they are wearing it. Bulk zinc oxide is white, but nanoparticulate zinc oxide cannot be seen when it is spread on the skin. Zinc oxide blocks ultraviolet light, so it is used in sunscreens. Sunscreens block harmful ultraviolet light from the sun reaching the skin. Nanoparticulate materials are used in some paints, cosmetics and sunscreens. They can be mixed into other materials to form composite materials with improved properties. Nanoparticles are so small that they can enter biological tissue. Nanoparticles have distinctive properties, including: Judgements on whether to use nanotechnology relies on balancing the benefits against the possible risks. It will take time and more money to fully research the risks, including the effect of nanoparticles on the human body. Money has been invested into researching the uses of nanoparticles. Many of these risks are not yet fully known. Nanotechnology does bring possible risks to both the environment and human health. ![]() This could bring medical benefits but it could also be a risk to human health. The small size of nanoparticles means that it is possible that they can penetrate into the body. Nanotechnology is the use and control of very small structures that are 1 to 100 nanometres in size. ![]()
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