The diagram below describes the structure of a home smokery and how it works. (MINH BUI)

The given diagram illustrates how to cook delicious smoky foodstuff from fresh air . Looking at the diagram from a general perspective,

this

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is the linear man-made process of cooking smoky fish including 3 stages. It starts with fresh air goes into the pit and ends with the smoked fish hung on the rope. Looking at the diagram from a more detailed perspective, first of all, the lid of the first pit is opened so that the clean wind can enter because it provides enough oxygen which helps

keeping

Wrong verb form

keep

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the fire burning in the second pit.

Secondly

Linking Words

, the second chamber contains the burned wood that produces enough smoke for cooking, the lid of it is fully sealed to keep smoke in.

Last

Linking Words

but not least, the fresh meat and fish

is

Correct subject-verb agreement

are

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hung on the ceiling in the above ground level box

while

Linking Words

the barrel under it contains the oil from the fresh food which makes the taste and flavour of it become more special and tasty