The given graph shows the nitrogen oxide emissions produced by four vehicles. Summarise the information by selecting and reporting the main points and make comparisons where relevant. Write at least 150 words.

The line chart depicts how much

nitrogen

oxide

emission

produced

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is produced

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per kilometre by four vehicles.

Overall

, the amounts of

nitrogen

oxide

emission

production

of

Change preposition

by

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petrol

car

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cars

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stays relatively constant at all speed

levels

,

while

diesel

car

's

emission

slowly decreases when the speed is increased. Lorries' and buses' emissions first decrease in the beginning speed

levels

, and

therefore

, gradually increase over the next speed

levels

. The amount of

nitrogen

oxide

emission

of buses is 40

g

/

km

at 10

kph

which gradually decreases to just above 25

g

/

km

at 60

kph

before increasing around 42

g

/

km

at 130

kph

. Lorries'

nitrogen

oxide

emission

rate is nearly 35

g

/

km

at the very beginning speed, and

then

it drops moderately to just above 15

g

/

km

at 90

kph

. It inclines back to almost 25

g

/

km

in the final speed level of lorries. The remaining vehicles, diesel and petrol cars, do not produce high

amount

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amounts

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of

nitrogen

oxide

emissions during the all speed

levels

that

Correct pronoun usage

apply

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recorded. Petrol

car

's

emission

rate remains relatively constant at just above 10

kph

at the beginning and the ending

levels

. Diesel

car

's

emission

rate slowly falls from around 6

g

/

km

to about 5

g

/

km

when the speed increases from 10

kph

to 130

kph

.