Makkar ielts graphs

reporting the main features, and make comparisons where relevant. Write at least 150 
words. 
The given process compares the steps of purifying water by two types of filter systems. It is 
clear from the graph that the basic principal of purifying water in both systems is filtration. 
In the first system there is a 200 litre water container which has an inlet on the top through 
which dirty water is sent in. The top one third has sand to filter the water. Below the sand 
are tiny stones and below the layer of stones are pipes with holes. After passing through the 
three layers the water which comes out is pure and fit for drinking.
The second system is a bit more advanced. The untreated water is stored in a container 
which has a tap and from that container the water is sent to another container with sand. 
After being filtered through the sand the water is again stored in another container with a 
tap from which the water is finally used for household purposes.
So, it can be seen that water can be purified for household use using a very simple and 
inexpensive method of filtration. 
 

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156.
 
The graphs below show the percentage of household energy used and the amount 
of greenhouse gases produced in Australia. Summarise the information making 
comparisons where relevant.
The given pie charts compare the energy consumption for various domestic areas with the 
emission of greenhouse gases through these sources in Australia.
The most striking feature of the graph is that a fifth (20%) of energy is used for heating and 
cooling whereas the greenhouse gas emission through this is about two fifths (38%) which is 
just about double. Greenhouse gas emissions because of water heating is 25% which is also 
slightly more than the usage at 23%. The least amount of energy is used for cooking and for 
stand-by purposes. 5% energy is used for each of these two purposes. The emission of 
greenhouse gases is also approximately similar from both these sources at 4 and 3% 
respectively.
Approximately a tenth of the energy is used for lighting and a similar amount for 
refrigeration. However, these two areas are the most energy efficient as the greenhouse gas 
emission through both is 7%. Approximately a quarter of the energy is used for other 
appliances and the greenhouse gas emission through these is only 16% which is slightly over 
a fifth.
Overall it can be seen that heating and cooling contribute the most to global warming 
whereas cooking and standby appliances contribute the least.