The line graph differ the amount of nitrogen oxide by four types of vehicles. Summarise the information by selecting and reporting the main features, and make comparisions where relevant

The line graph compares the

amount

of

nitrogen

oxide

released from four types of vehicles at different paces.

Overall

, it is obvious that

the

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buses emit the highest

amount

of

nitrogen

oxide

at all speeds,

while

the

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diesel

cars are responsible for the lowest

amount

of

nitrogen

oxide

emissions at different speeds.

Furthermore

, the

amount

of

nitrogen

production in petrol and

diesel

cars remains unchanged over different speeds. Looking at lorries and buses, their emission patterns are more variable. From 10

kph

to 60

kph

, the higher the speed of the buses, the lower the

amount

of

nitrogen

oxide

production, so that at 60

kph

, the

nitrogen

oxide

emissions decreased to 25

grams

per

kilometer

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kilometre

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, which is the lowest

amount

.

However

, after 60

kph

, the figure for

nitrogen

emissions starts to go up from 60

grams

at 70

kph

, reaching more than 40

grams

at 130

kph

.

Moreover

, the gas release of the lorries drops from 33

grams

in

Change preposition

at

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10

kph

to approximately 15

grams

in

Change preposition

at

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90

kph

. After that, the trend reverses and by increasing in speed, the gas discharge rises smoothly to 25

grams

in

Change preposition

at

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130

kph

. The level of

nitrogen

oxide

that is

released by petrol and

diesel

cars is steady.

Nevertheless

, the figures for the petrol car is about 10

grams

at every speed, as compared to around 5

grams

for the

diesel

car.