The flow chart shows negative impacts on environment resulted from deforestation.
It is clear that the environment is affected by deforestation in four aspects, beginning with clear cutting of forests and ending with flooding and less biodiversity.
Firstly, forests are cut clearly. Because heavy logging equipment compresses the soil, it becomes hard and ‘baked’. Consequently, rain water runs off, leading to flooding.
Meanwhile, fewer roots hold the top soil in place as a result of deforestation so top soil erodes. Also, waste wood from logging is destroyed due to increased risk of deliberate and accidental burning; therefore, micro-organisms feeding on waste is lost. Plants return less moisture to air owing to loss of forests, resulting in less precipitation and then increased drought. These changes mentioned above provide conditions for pioneer species to move in and hence vegetation is degraded, finally leading to less biodiversity in forests.
- The graph below show the value of clothing exported from Bangladesh between 1998 and 2012 and the pie chart shows the destinations and value of exported clothing in 2012 59
- The flow chart illustrates the consequences of deforestation Summarize the information by selecting and reporting the main features and make comparisons where relevant
- The importance of biodiversity is being more widely recognised as increasing numbers of species come under threat What can be done to maintain biodiversity 61
- The graph shows the percentage of UK adolescents following a vegetarian diet Summarise the information by selecting and reporting the man features
- Many people believe that formal pen and paper examinations are not the best method of assessing educational achievement What is your view of examination 67