Urbanisation The proportion of a country’s population that live in urban areas. This process is set to accelerate in developing nations with the rise in mega cities due to increased rule urban migration and natural increases. The increase in Rule urban migration is due to push and pull factors like war, famine, increased employment opportunities…
“Human activity has led to irreversible changes to the carbon cycle, causing negative impacts for life on earth” To what extent do you agree with this statement? (20 marks) One of the biggest human contributions to the carbon cycle is the combustion of fossil fuels meets our energy needs, which accounts for approximately 80% of…
Assess the impact of farming practises on the carbon budget? (20 marks) The carbon budget is the difference between the inputs and outputs of carbon in a subsystem. A carbon sink is likely to have a positive carbon budget because it takes in more carbon than is released and vice versa for a carbon source….
To what extent does an understanding of feedback systems in the carbon cycle help with attempts to mitigate the impacts of climate change? (20 marks) A positive feedback loop in the system is then exacerbated by the system, hence the system deviates further away from its original position. Is this positive feedback loop that is…
Assess the impacts of natural changes to the carbon cycle up on life on earth? (9 marks) Natural changes to the carbon cycle include wildfires and volcanic activity. One natural change is wildfires, which are uncontrolled rule fires. This leads to the combustion of Tinder dry vegetation, like the Alberta wildfire in 2016, leading to…
Explain the concept of carbon sequestration? (4 marks) Sequestration is the removal of carbon from the atmosphere into another store. One example of this is photosynthesis, where terrestrial plants sequestrate carbon via photosynthesis. Another example is diffusion. When oceans are cooler, and temperatures are more able to diffuse carbon from the atmosphere into the global…
Explain the concept of dynamic equilibrium in relation to the water cycle? (4 marks) Dynamic equilibrium is when the magnitude of inputs and outputs of a system are equal. An increase in global temperatures will lead to an increase in the melting of the polar ice caps and tundra. As a result, a transfer of…
Outline the process is by which natural variation in the carbon cycle occurs? (6 marks) One natural variation in the carbon cycle is when there are free to magmatic and plinian volcanic eruptions. This will lead to a large increase in the magnitude of carbon in the atmosphere. This will reflect incoming solar radiation leading…
Describe the key stores within the carbon cycle and the transfers between them at a local scale? (4 marks) Photosynthesis is the transfer of carbon from the atmosphere into terrestrial plants. And increasing the magnitude of carbon in the atmosphere, will stimulate plant growth. Therefore, leading to an increase in the size of the vegetation…
Explain the concept of dynamic equilibrium in relation to the carbon cycle at the scale of the lithosphere? (4 marks) Dynamic equilibrium is when the inputs and outputs in system or equal. An increase in acid rain will lead to an increase in the erosion of carbon rich rock like limestone leading to an increase…
